{"id":315,"date":"2026-05-08T01:21:37","date_gmt":"2026-05-07T16:21:37","guid":{"rendered":"https:\/\/wuhanqing.cn\/wordpress\/?p=315"},"modified":"2026-05-08T02:05:28","modified_gmt":"2026-05-07T17:05:28","slug":"%ec%8b%a4%ed%97%98%eb%b3%b4%ea%b3%a0%ec%84%9c%ea%b4%80%ec%84%b1%eb%aa%a8%eb%a9%98%ed%8a%b8-%ec%b8%a1%ec%a0%95%ea%b3%bc-%ea%b0%81%ec%9a%b4%eb%8f%99%eb%9f%89-%eb%b3%b4%ec%a1%b4","status":"publish","type":"post","link":"https:\/\/wuhanqing.cn\/wordpress\/ko\/2026\/05\/08\/%ec%8b%a4%ed%97%98%eb%b3%b4%ea%b3%a0%ec%84%9c%ea%b4%80%ec%84%b1%eb%aa%a8%eb%a9%98%ed%8a%b8-%ec%b8%a1%ec%a0%95%ea%b3%bc-%ea%b0%81%ec%9a%b4%eb%8f%99%eb%9f%89-%eb%b3%b4%ec%a1%b4\/","title":{"rendered":"[\uc2e4\ud5d8\ubcf4\uace0\uc11c]\uad00\uc131\ubaa8\uba58\ud2b8 \uce21\uc815\uacfc \uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874"},"content":{"rendered":"

# 1.\uc2e4\ud5d8 \uc81c\ubaa9<\/p>\n

\uc774\ubc88 \uc2e4\ud5d8\uc758 \uc8fc\uc81c\ub294 **\uad00\uc131\ubaa8\uba58\ud2b8 \uce21\uc815\uacfc \uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874** \uc774\ub2e4.<\/p>\n

# 2. \uc2e4\ud5d8 \ubaa9\uc801<\/p>\n

\ud68c\uc804\ud558\ub294 \uac15\uccb4(Rigid Body)\uc758 \uac01\uac00\uc18d\ub3c4(Angular Acceleration)\ub97c \uce21\uc815\ud568\uc73c\ub85c\uc368 \uadf8 \ubb3c\uccb4\uc758 **\uad00\uc131\ubaa8\uba58\ud2b8(Moment of Inertia)** \ub97c \uc2e4\ud5d8\uc801\uc73c\ub85c \uacb0\uc815\ud558\uace0, \uae30\ud558\ud559\uc801 \uad6c\uc870\ub97c \ubc14\ud0d5\uc73c\ub85c \uacc4\uc0b0\ub41c \uc774\ub860\uac12\uacfc \ube44\uad50\ud558\uc5ec \ud68c\uc804 \uc6b4\ub3d9\uc758 \uc5ed\ud559\uc801 \uc6d0\ub9ac\ub97c \uc774\ud574\ud55c\ub2e4. \ub610\ud55c, \ud68c\uc804\ud558\ub294 \uacc4\uc5d0 \uc678\ubd80 \ud1a0\ud06c\uac00 \uc791\uc6a9\ud558\uc9c0 \uc54a\uc744 \ub54c **\uac01\uc6b4\ub3d9\ub7c9(Angular Momentum)** \uc774 \ubcf4\uc874\ub428\uc744 \uc2e4\ud5d8\uc801\uc73c\ub85c \ud655\uc778\ud558\uace0, \uc774 \uacfc\uc815\uc5d0\uc11c \uc5d0\ub108\uc9c0\uc758 \ubcc0\ud654\ub97c \uace0\ucc30\ud55c\ub2e4.<\/p>\n

# 3. \uad00\ub828 \uc774\ub860<\/p>\n

## 3.1 \uad00\uc131\ubaa8\uba58\ud2b8 (Moment of Inertia)<\/p>\n

\ud68c\uc804 \uc6b4\ub3d9\uc744 \ud558\ub294 \ubb3c\uccb4\uc5d0\uc11c \uc9c1\uc120 \uc6b4\ub3d9\uc758 '\uc9c8\ub7c9(Mass)'\uc5d0 \ub300\uc751\ud558\ub294 \ubb3c\ub9ac\ub7c9\uc73c\ub85c, \ubb3c\uccb4\uac00 \uc790\uc2e0\uc758 \ud68c\uc804 \uc0c1\ud0dc\ub97c \uc720\uc9c0\ud558\ub824\ub294 \uc131\uc9c8\uc758 \ud06c\uae30\ub97c \ub098\ud0c0\ub0b8\ub2e4. \uc9c8\ub7c9 $m_i$\uc778 \uc785\uc790\ub4e4\uc774 \ud68c\uc804\ucd95\uc73c\ub85c\ubd80\ud130 $r_i$\ub9cc\ud07c \ub5a8\uc5b4\uc838 \uc788\uc744 \ub54c, \uad00\uc131\ubaa8\uba58\ud2b8 $I$\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ub41c\ub2e4.<\/p>\n

$$I = \\sum m_i r_i^2$$<\/p>\n

\uc5f0\uc18d\uc801\uc778 \uc9c8\ub7c9 \ubd84\ud3ec\ub97c \uac00\uc9c4 \uac15\uccb4\uc758 \uacbd\uc6b0, \ubbf8\uc18c \uc9c8\ub7c9 $dm$\uc5d0 \ub300\ud574 \uc801\ubd84(Integral)\ud558\uc5ec \uad6c\ud55c\ub2e4.<\/p>\n

$$I = \\int r^2 dm$$<\/p>\n

### 3.1.1 \uc6d0\ud310(Disk)\uacfc \uc6d0\ud658(Ring)\uc758 \uad00\uc131\ubaa8\uba58\ud2b8 \uc720\ub3c4 (\uc99d\uba85)<\/p>\n

#### 3.1.1.1 \uade0\uc77c\ud55c \uc6d0\ud310 (Solid Disk)<\/p>\n

\ubc18\uc9c0\ub984\uc774 $R$, \uc804\uccb4 \uc9c8\ub7c9\uc774 $M$\uc778 \uade0\uc77c\ud55c \uc6d0\ud310\uc758 \uc911\uc2ec\ucd95\uc5d0 \ub300\ud55c \uad00\uc131\ubaa8\uba58\ud2b8\ub97c \uad6c\ud574\ubcf4\uc790. \uc6d0\ud310\uc758 \uba74\ubc00\ub3c4(Surface density) $\\sigma = \\frac{M}{\\pi R^2}$\uc774\ub2e4.<\/p>\n

\ubc18\uc9c0\ub984 $r$, \ub450\uaed8 $dr$\uc778 \ubbf8\uc18c \uace0\ub9ac\ub97c \uc0dd\uac01\ud558\uba74, \ubbf8\uc18c \uba74\uc801 $dA = 2\\pi r dr$\uc774\ubbc0\ub85c \ubbf8\uc18c \uc9c8\ub7c9 $dm = \\sigma dA = \\frac{M}{\\pi R^2} \\cdot 2\\pi r dr$\uc774\ub2e4.<\/p>\n

$$I_{disk} = \\int_0^R r^2 dm = \\int_0^R r^2 \\left( \\frac{2Mr}{R^2} \\right) dr = \\frac{2M}{R^2} \\int_0^R r^3 dr$$<\/p>\n

$$I_{disk} = \\frac{2M}{R^2} \\left[ \\frac{r^4}{4} \\right]_0^R = \\frac{2M}{R^2} \\cdot \\frac{R^4}{4} = \\frac{1}{2}MR^2$$<\/p>\n

#### 3.1.1.2 \ub450\uaebc\uc6b4 \uc6d0\ud658 (Thick Ring)<\/p>\n

\ub0b4\uacbd(Inner radius) $R_1$, \uc678\uacbd(Outer radius) $R_2$, \uc9c8\ub7c9 $M$\uc778 \uc6d0\ud658\uc758 \uad00\uc131\ubaa8\uba58\ud2b8\ub97c \uad6c\ud574\ubcf4\uc790. \uba74\ubc00\ub3c4(Surface density) $\\sigma = \\frac{M}{\\pi(R_2^2 - R_1^2)}$\uc774\ub2e4.<\/p>\n

$$I_{ring} = \\int_{R_1}^{R_2} r^2 \\left( \\frac{2Mr}{R_2^2 - R_1^2} \\right) dr = \\frac{2M}{R_2^2 - R_1^2} \\left[ \\frac{r^4}{4} \\right]_{R_1}^{R_2}$$<\/p>\n

$$I_{ring} = \\frac{2M}{R_2^2 - R_1^2} \\cdot \\frac{R_2^4 - R_1^4}{4} = \\frac{M}{2(R_2^2 - R_1^2)}(R_2^2 - R_1^2)(R_2^2 + R_1^2)$$<\/p>\n

$$I_{ring} = \\frac{1}{2}M(R_1^2 + R_2^2)$$<\/p>\n

## 3.2 \uac01\uc6b4\ub3d9\ub7c9\uacfc \ud1a0\ud06c\uc758 \uad00\uacc4 \uc720\ub3c4 (Newton \uc81c2\ubc95\uce59\uc758 \ud68c\uc804 \ubcc0\ud658)<\/p>\n

\ud68c\uc804 \uc6b4\ub3d9\uc744 \uc5ed\ud559\uc801\uc73c\ub85c \ud574\uc11d\ud558\uae30 \uc704\ud574, \ubcd1\uc9c4 \uc6b4\ub3d9\uc758 \uae30\ubcf8 \ubc95\uce59\uc778 \ub274\ud134\uc758 \uc81c2\ubc95\uce59($F = ma$)\uc744 \ud68c\uc804 \uc6b4\ub3d9\uc758 \ud615\ud0dc\ub85c \ubcc0\ud658\ud574 \ubcf4\uc790.<\/p>\n

\uc9c8\ub7c9\uc774 $m$\uc778 \ub2e8\uc77c \uc785\uc790\ub97c \uac00\uc815\ud560 \ub54c, \ub274\ud134\uc758 \uc81c2\ubc95\uce59\uc758 \ubbf8\ubd84 \ud615\ud0dc\ub294 \uc120\uc6b4\ub3d9\ub7c9($p = mv$)\uc758 \uc2dc\uac04 \ubcc0\ud654\uc728\ub85c \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ub41c\ub2e4.<\/p>\n

$$F = \\frac{dp}{dt} = m\\frac{dv}{dt}$$<\/p>\n

\uc774 \uc785\uc790\uac00 \uc6d0\uc810\uc73c\ub85c\ubd80\ud130 \uc704\uce58 \ubca1\ud130 $r$\uc5d0 \uc788\uc744 \ub54c, \uc785\uc790\uc5d0 \uc791\uc6a9\ud558\ub294 \ud1a0\ud06c(Torque, $\\tau$)\ub294 \uc704\uce58 \ubca1\ud130\uc640 \ud798 \ubca1\ud130\uc758 \uc678\uc801(Cross Product, Outer Product)\uc73c\ub85c \uc815\uc758\ub41c\ub2e4.<\/p>\n

$$\\tau = r \\times F$$<\/p>\n

\uc704 \uc2dd\uc758 $F$ \uc790\ub9ac\uc5d0 \ub274\ud134 \uc81c2\ubc95\uce59\uc758 \ubbf8\ubd84 \ud615\ud0dc\ub97c \ub300\uc785\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n

$$\\tau = r \\times \\frac{dp}{dt} \\tag{1}$$<\/p>\n

\ud55c\ud3b8, \uc785\uc790\uc758 \uac01\uc6b4\ub3d9\ub7c9(Angular Momentum, $L$)\uc740 \uc704\uce58 \ubca1\ud130\uc640 \uc120\uc6b4\ub3d9\ub7c9(Linear Momentum)\uc758 \uc678\uc801\uc73c\ub85c \uc815\uc758\ub41c\ub2e4.<\/p>\n

$$L = r \\times p$$<\/p>\n

\uc774 \uac01\uc6b4\ub3d9\ub7c9\uc744 \uc2dc\uac04 $t$\uc5d0 \ub300\ud574 \ubbf8\ubd84\ud574 \ubcf4\uc790. \ubbf8\ubd84\uc758 \uacf1\uc758 \ubc95\uce59\uc5d0 \uc758\ud574 \ub2e4\uc74c\uacfc \uac19\uc774 \uc804\uac1c\ub41c\ub2e4.<\/p>\n

$$\\frac{dL}{dt} = \\frac{d}{dt}(r \\times p) = \\left( \\frac{dr}{dt} \\times p \\right) + \\left( r \\times \\frac{dp}{dt} \\right)$$<\/p>\n

\uc5ec\uae30\uc11c $\\frac{dr}{dt}$\ub294 \uc785\uc790\uc758 \uc18d\ub3c4 $v$\uc774\uba70, \uc120\uc6b4\ub3d9\ub7c9 $p = mv$\uc774\ub2e4. \uc18d\ub3c4 \ubca1\ud130 $v$\uc640 \uc790\uc2e0\uacfc \ud3c9\ud589\ud55c $mv$\uc758 \uc678\uc801\uc740 0\uc774 \ub41c\ub2e4 ($v \\times mv = 0$). \ub530\ub77c\uc11c \uccab \ubc88\uc9f8 \ud56d\uc740 \uc18c\uac70\ub418\uace0 \ub450 \ubc88\uc9f8 \ud56d\ub9cc \ub0a8\ub294\ub2e4.<\/p>\n

$$\\frac{dL}{dt} = r \\times \\frac{dp}{dt} \\tag{2}$$<\/p>\n

\uc2dd (1)\uacfc \uc2dd (2)\ub97c \ube44\uad50\ud558\uba74, \ud1a0\ud06c\uc640 \uac01\uc6b4\ub3d9\ub7c9 \uc0ac\uc774\uc758 \uadfc\ubcf8\uc801\uc778 \uad00\uacc4\uac00 \ub3c4\ucd9c\ub41c\ub2e4. \uc989, \uacc4\uc5d0 \uc791\uc6a9\ud558\ub294 \uc54c\uc9dc \ud1a0\ud06c\ub294 \uac01\uc6b4\ub3d9\ub7c9\uc758 \uc2dc\uac04 \ubcc0\ud654\uc728\uacfc \uac19\ub2e4.<\/p>\n

$$\\tau = \\frac{dL}{dt} \\tag{3}$$<\/p>\n

\uc774\uc81c \uc774 \uad00\uacc4\ub97c \uace0\uc815\ub41c \ucd95\uc744 \uc911\uc2ec\uc73c\ub85c \ud68c\uc804\ud558\ub294 \uac15\uccb4\ub85c \ud655\uc7a5\ud574 \ubcf4\uc790. \uac15\uccb4\uac00 \uac01\uc18d\ub3c4 $\\omega$\ub85c \ud68c\uc804\ud560 \ub54c, \uac01 \uc785\uc790\uc758 \uc18d\ub3c4\ub294 $v = r\\omega$ (\uc2a4\uce7c\ub77c \ud615\ud0dc)\uc774\ubbc0\ub85c \uac01\uc6b4\ub3d9\ub7c9 $L$\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \ud45c\ud604\ub41c\ub2e4.<\/p>\n

$$L = r \\cdot p = r(mv) = mr^2\\omega$$<\/p>\n

\uc5ec\uae30\uc11c $mr^2$\uc740 \uc785\uc790\uc758 \uad00\uc131\ubaa8\uba58\ud2b8 $I$\uc774\ubbc0\ub85c, $L = I\\omega$\uac00 \uc131\ub9bd\ud55c\ub2e4. \uc774\ub97c \uc2dd (3)\uc5d0 \ub300\uc785\ud558\uc5ec \uc2dc\uac04\uc5d0 \ub300\ud574 \ubbf8\ubd84\ud558\uba74,<\/p>\n

$$\\tau = \\frac{d}{dt}(I\\omega) = I\\frac{d\\omega}{dt} = I\\alpha \\tag{4}$$<\/p>\n

\ucd5c\uc885\uc801\uc73c\ub85c, \ubcd1\uc9c4 \uc6b4\ub3d9\uc758 $F = m\\frac{dv}{dt}$\uc5d0 \uc644\ubcbd\ud558\uac8c \ub300\uc751\ud558\ub294 \ud68c\uc804 \uc6b4\ub3d9\uc758 \uc6b4\ub3d9 \ubc29\uc815\uc2dd\uc774 \uc720\ub3c4\ub41c\ub2e4.<\/p>\n

$$\\tau = r \\times F = I\\alpha = \\frac{dL}{dt}$$<\/p>\n

\uc774 \ubc29\uc815\uc2dd\uc740 \ubcf8 \uc2e4\ud5d8\uc5d0\uc11c \uc6d0\ud310\uacfc \ub9c1\uc758 \ud68c\uc804 \uac00\uc18d\ub3c4($\\alpha$)\ub97c \uce21\uc815\ud558\uc5ec \uad00\uc131\ubaa8\uba58\ud2b8($I$)\ub97c \uc5ed\uc0b0\ud558\ub294 \ud575\uc2ec\uc801\uc778 \uc218\ud559\uc801 \uadfc\uac70\uac00 \ub41c\ub2e4.<\/p>\n

## 3.3 \ud68c\uc804 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0 (Rotational Kinetic Energy) \ubc0f \uc720\ub3c4<\/p>\n

\ubcd1\uc9c4 \uc6b4\ub3d9(Translational motion)\uc744 \ud558\ub294 \ubb3c\uccb4\uc758 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0\uac00 \uc9c8\ub7c9\uacfc \uc18d\ub3c4\uc5d0 \uc758\ud574 \uacb0\uc815\ub418\ub4ef\uc774, \uace0\uc815\ub41c \ucd95\uc744 \uc911\uc2ec\uc73c\ub85c \ud68c\uc804\ud558\ub294 \uac15\uccb4\uc758 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0 \uc5ed\uc2dc \uad00\uc131\ubaa8\uba58\ud2b8\uc640 \uac01\uc18d\ub3c4\ub97c \ud1b5\ud574 \uc815\uc758\ud560 \uc218 \uc788\ub2e4. \uc774\ub97c \ud68c\uc804 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0(Rotational Kinetic Energy)\ub77c\uace0 \ud558\uba70, \ubcd1\uc9c4 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0\uc758 \uae30\ubcf8 \uc815\uc758\ub97c \ud68c\uc804\ud558\ub294 \uac15\uccb4\uc758 \uac01 \ubbf8\uc18c \uc9c8\ub7c9\uc5d0 \uc801\uc6a9\ud558\uc5ec \uc720\ub3c4\ud560 \uc218 \uc788\ub2e4.<\/p>\n

### 3.3.1 \uc720\ub3c4 \uacfc\uc815<\/p>\n

\uc5b4\ub5a4 \uac15\uccb4\uac00 \uace0\uc815\ub41c \ud68c\uc804\ucd95\uc744 \uc911\uc2ec\uc73c\ub85c \uac01\uc18d\ub3c4 $\\omega$\ub85c \ud68c\uc804\ud558\uace0 \uc788\ub2e4\uace0 \uac00\uc815\ud558\uc790. \uc774 \uac15\uccb4\ub294 \uc218\ub9ce\uc740 \ubbf8\uc18c \uc785\uc790\ub4e4\ub85c \uc774\ub8e8\uc5b4\uc838 \uc788\ub2e4\uace0 \ubcfc \uc218 \uc788\ub2e4.<\/p>\n

\ud68c\uc804\ucd95\uc73c\ub85c\ubd80\ud130 \uc218\uc9c1 \uac70\ub9ac $r_i$\ub9cc\ud07c \ub5a8\uc5b4\uc838 \uc788\ub294 \uc9c8\ub7c9 $m_i$\uc778 $i$\ubc88\uc9f8 \uc785\uc790\uc758 \uc120\uc18d\ub3c4 $v_i$\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uac01\uc18d\ub3c4 $\\omega$\uc640 \uad00\uacc4\ub97c \uac00\uc9c4\ub2e4.<\/p>\n

$$v_i = r_i \\omega$$<\/p>\n

\uc774 $i$\ubc88\uc9f8 \uc785\uc790\uac00 \uac00\uc9c0\ub294 \ubcd1\uc9c4 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0 $K_i$\ub294 \ub274\ud134 \uc5ed\ud559\uc758 \uae30\ubcf8 \uc815\uc758\uc5d0 \ub530\ub77c \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n

$$K_i = \\frac{1}{2}m_i v_i^2$$<\/p>\n

\uc5ec\uae30\uc5d0 $v_i = r_i \\omega$\ub97c \ub300\uc785\ud558\uc5ec \uc815\ub9ac\ud558\uba74,<\/p>\n

$$K_i = \\frac{1}{2}m_i (r_i \\omega)^2 = \\frac{1}{2} m_i r_i^2 \\omega^2$$<\/p>\n

\uc774 \ub41c\ub2e4.<\/p>\n

\uac15\uccb4 \uc804\uccb4\uc758 \ud68c\uc804 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0 $K_{rot}$\ub294 \uac15\uccb4\ub97c \uad6c\uc131\ud558\ub294 \ubaa8\ub4e0 \uc785\uc790\ub4e4\uc758 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0\ub97c \ud569\ud55c \uac83\uacfc \uac19\ub2e4. \uac15\uccb4\uac00 \uc644\uc804\ud55c \ud615\ud0dc\ub97c \uc720\uc9c0\ud558\ub294 \uac15\uccb4(Rigid body)\ub77c\uba74, \ud68c\uc804 \uc2dc \ubaa8\ub4e0 \uc785\uc790\ub294 \ub3d9\uc77c\ud55c \uac01\uc18d\ub3c4 $\\omega$\ub97c \uacf5\uc720\ud558\ubbc0\ub85c $\\omega$\ub294 \uc2dc\uadf8\ub9c8($\\sum$) \uae30\ud638 \ubc16\uc73c\ub85c \ubb36\uc5b4\ub0bc \uc218 \uc788\ub2e4.<\/p>\n

$$K_{rot} = \\sum_{i} K_i = \\sum_{i} \\left( \\frac{1}{2} m_i r_i^2 \\omega^2 \\right)$$<\/p>\n

$$K_{rot} = \\frac{1}{2} \\left( \\sum_{i} m_i r_i^2 \\right) \\omega^2$$<\/p>\n

\uc774\ub54c \uad04\ud638 \uc548\uc758 \uc2dd $\\sum_{i} m_i r_i^2$\uc740 \uc55e\uc11c 3.1\uc808\uc5d0\uc11c \uc815\uc758\ud55c \uad00\uc131\ubaa8\uba58\ud2b8(Moment of Inertia, $I$)\uc640 \ub3d9\uc77c\ud558\ub2e4.<\/p>\n

\ub530\ub77c\uc11c \uad04\ud638 \ubd80\ubd84\uc744 $I$\ub85c \uce58\ud658\ud558\uba74 \ucd5c\uc885\uc801\uc778 \ud68c\uc804 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0 \uacf5\uc2dd\uc774 \uc644\uc131\ub41c\ub2e4.<\/p>\n

$$K_{rot} = \\frac{1}{2}I\\omega^2$$<\/p>\n

\uc774 \uacb0\uacfc\ub294 \ubcd1\uc9c4 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0 \uacf5\uc2dd $K = \\frac{1}{2}mv^2$\uacfc \uc644\ubcbd\ud55c \uc218\ud559\uc801 \ub300\uce6d\uc744 \uc774\ub8ec\ub2e4. \uc989, \ud68c\uc804 \uc6b4\ub3d9\uc5d0\uc11c\ub294 \uc9c8\ub7c9 $m$ \ub300\uc2e0 \uad00\uc131\ubaa8\uba58\ud2b8 $I$\uac00, \uc120\uc18d\ub3c4 $v$ \ub300\uc2e0 \uac01\uc18d\ub3c4 $\\omega$\uac00 \uadf8 \uc5ed\ud560\uc744 \ub300\uc2e0\ud568\uc744 \uba85\ud655\ud788 \ubcf4\uc5ec\uc900\ub2e4.<\/p>\n

### 3.3.2 \ubcf8 \uc2e4\ud5d8\uc5d0\uc11c\uc758 \ubb3c\ub9ac\uc801 \uc758\ubbf8<\/p>\n

\ubcf8 \uc2e4\ud5d8\uc758 '\uc2e4\ud5d8 B(\uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874)'\uc5d0\uc11c \ud68c\uc804\ud558\ub294 \uc6d0\ud310 \uc704\uc5d0 \uc6d0\ud658(Mass Ring)\uc744 \ub5a8\uc5b4\ub728\ub9ac\ub294 \uacfc\uc815\uc740, \uc678\ubd80 \ud1a0\ud06c\uac00 \uc5c6\uc73c\ubbc0\ub85c \uac01\uc6b4\ub3d9\ub7c9($L$)\uc740 \ubcf4\uc874\ub418\uc9c0\ub9cc \ub0b4\ubd80\uc801\uc778 \ub9c8\ucc30\uc5d0 \uc758\ud574 \ub450 \ubb3c\uccb4\uac00 \uacb0\uad6d \uac19\uc740 \uac01\uc18d\ub3c4\ub85c \ud68c\uc804\ud558\uac8c \ub418\ub294 \uc644\uc804 \ube44\ud0c4\uc131 \ucda9\ub3cc(Perfectly inelastic collision)\uacfc \uc5ed\ud559\uc801\uc73c\ub85c \ub3d9\uc77c\ud558\ub2e4. \ub530\ub77c\uc11c \uc774 \uacf5\uc2dd\uc744 \uc774\uc6a9\ud558\uba74 \ucda9\ub3cc \uc804\ud6c4\uc758 \ud68c\uc804 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0\ub97c \uacc4\uc0b0\ud558\uc5ec, \uac01\uc6b4\ub3d9\ub7c9\uc774 \ubcf4\uc874\ub428\uc5d0\ub3c4 \ubd88\uad6c\ud558\uace0 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0\ub294 \uc5f4\uc5d0\ub108\uc9c0 \ub4f1\uc73c\ub85c \uc190\uc2e4($\\Delta K_{rot} < 0$)\ub428\uc744 \ucd94\uac00\uc801\uc73c\ub85c \uc99d\uba85\ud560 \uc218 \uc788\ub2e4.<\/p>\n

## 3.4 \uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874 \ubc95\uce59 (Conservation of Angular Momentum)<\/p>\n

\uacc4\uc5d0 \uc791\uc6a9\ud558\ub294 \uc678\ub825\uc5d0 \uc758\ud55c \uc54c\uc9dc \ud1a0\ud06c\uac00 0\uc778 \uacbd\uc6b0($\\tau_{ext} = 0$), \uacc4\uc758 \ucd1d \uac01\uc6b4\ub3d9\ub7c9\uc740 \uc77c\uc815\ud558\uac8c \uc720\uc9c0\ub41c\ub2e4.<\/p>\n

$$\\frac{dL}{dt} = 0 \\implies L = I_i \\omega_i = I_f \\omega_f = \\text{Constant}$$<\/p>\n

\ubcf8 \uc2e4\ud5d8\uc5d0\uc11c\ub294 \ud68c\uc804\ud558\ub294 \uc6d0\ud310 \uc704\uc5d0 \uc6d0\ud658\uc744 \ub5a8\uc5b4\ub728\ub824 \uad00\uc131\ubaa8\uba58\ud2b8\ub97c $I_i \\to I_f$\ub85c \ubcc0\ud654\uc2dc\ucf30\uc744 \ub54c, \uac01\uc18d\ub3c4\uac00 $\\omega_i \\to \\omega_f$\ub85c \ubcc0\ud558\ub294 \uacfc\uc815\uc744 \ud1b5\ud574 \uc774\ub97c \ud655\uc778\ud55c\ub2e4.<\/p>\n

## 3.5 \uc2e4\ud5d8\uc801 \uad00\uc131\ubaa8\uba58\ud2b8 \uce21\uc815 \uc6d0\ub9ac \ubc0f \uacf5\uc2dd \uc720\ub3c4<\/p>\n

\ubcf8 \uc2e4\ud5d8\uc5d0\uc11c\ub294 \ud68c\uc804\ucd95(\ubc18\uc9c0\ub984 $r$)\uc5d0 \uc2e4\uc744 \uac10\uace0 \uadf8 \ub05d\uc5d0 \uc9c8\ub7c9 $m$\uc778 \ucd94\ub97c \ub9e4\ub2ec\uc544 \uc790\uc720 \ub099\ud558\uc2dc\ud0a4\ub294 \ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \ucd94\uac00 \uc911\ub825\uc5d0 \uc758\ud574 \uac00\uc18d\ud558\uba70 \ub099\ud558\ud560 \ub54c \uc2e4\uc744 \ub2f9\uae30\uac8c \ub418\uace0, \uc774 \uc7a5\ub825(Tension, $T$)\uc774 \ud68c\uc804\ucd95\uc5d0 \ud1a0\ud06c\ub97c \ubc1c\uc0dd\uc2dc\ucf1c \uc804\uccb4 \uacc4\uc758 \ud68c\uc804 \uc6b4\ub3d9\uc744 \uc720\ubc1c\ud55c\ub2e4. \uc774 \uc5ed\ud559\uc801 \uacfc\uc815\uc744 \uc218\uc2dd\uc73c\ub85c \ubd84\ud574\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n

### 3.5.1 \ucd94\uc758 \ubcd1\uc9c4 \uc6b4\ub3d9 \ubc29\uc815\uc2dd (Translational Equation of Motion)<\/p>\n

\ub099\ud558\ud558\ub294 \uc9c8\ub7c9 $m$\uc778 \ucd94\uc5d0 \uc791\uc6a9\ud558\ub294 \uc54c\uc9dc\ud798\uc740 \uc544\ub798 \ubc29\ud5a5\uc73c\ub85c \uc791\uc6a9\ud558\ub294 \uc911\ub825 $mg$\uc640 \uc704 \ubc29\ud5a5\uc73c\ub85c \uc791\uc6a9\ud558\ub294 \uc2e4\uc758 \uc7a5\ub825 $T$\uc774\ub2e4. \ucd94\uc758 \ub099\ud558 \ubc29\ud5a5\uc744 \uc591(+)\uc73c\ub85c \uc124\uc815\ud558\uba74, \ub274\ud134 \uc81c2\ubc95\uce59\uc5d0 \ub530\ub978 \uc120\uac00\uc18d\ub3c4 $a$\uc758 \uc6b4\ub3d9 \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n

$$mg - T = ma \\tag{1}$$<\/p>\n

### 3.5.2 \uac15\uccb4\uc758 \ud68c\uc804 \uc6b4\ub3d9 \ubc29\uc815\uc2dd (Rotational Equation of Motion)<\/p>\n

\uc2e4\uc774 \ud68c\uc804\ucd95\uc744 \ub2f9\uae30\ub294 \uc7a5\ub825 $T$\ub294 \ubc18\uc9c0\ub984\uc774 $r$\uc778 \ud68c\uc804\ucd95\uc758 \uc811\uc120 \ubc29\ud5a5\uc73c\ub85c \uc791\uc6a9\ud558\ubbc0\ub85c \uc54c\uc9dc \ud1a0\ud06c $\\tau$\ub97c \ud615\uc131\ud55c\ub2e4. \ud68c\uc804\uccb4\uc758 \ucd1d \uad00\uc131\ubaa8\uba58\ud2b8\ub97c $I$, \uac01\uac00\uc18d\ub3c4\ub97c $\\alpha$\ub77c\uace0 \ud560 \ub54c \ud1a0\ud06c \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4. (\uc7a5\ub825\uc758 \uc791\uc6a9\uc120\uacfc \ubc18\uc9c0\ub984 \ubca1\ud130\ub294 \uc11c\ub85c \uc218\uc9c1\uc774\ubbc0\ub85c $\\sin 90^\\circ = 1$\uc774 \ub41c\ub2e4.)<\/p>\n

$$\\tau = r \\times T = rT = I\\alpha \\tag{2}$$<\/p>\n

### 3.5.3 \uc120\uac00\uc18d\ub3c4\uc640 \uac01\uac00\uc18d\ub3c4\uc758 \uad6c\uc18d \uc870\uac74 (Kinematic Constraint)<\/p>\n

\uc2e4\uc774 \ub298\uc5b4\ub098\uac70\ub098 \ud68c\uc804\ucd95\uc5d0\uc11c \ubbf8\ub044\ub7ec\uc9c0\uc9c0 \uc54a\ub294 \uc774\uc0c1\uc801\uc778 \uc0c1\ud0dc\ub97c \uac00\uc815\ud558\uba74, \ucd94\uc758 \uc120\uac00\uc18d\ub3c4 $a$\uc640 \ud68c\uc804\ucd95 \ud45c\uba74\uc758 \uc811\uc120 \uac00\uc18d\ub3c4\ub294 \uc644\uc804\ud788 \ub3d9\uc77c\ud558\ub2e4. \ub530\ub77c\uc11c \uc120\uc6b4\ub3d9\uacfc \ud68c\uc804\uc6b4\ub3d9 \uc0ac\uc774\uc5d0\ub294 \ub2e4\uc74c\uc758 \uae30\ud558\ud559\uc801 \uad00\uacc4\uac00 \uc131\ub9bd\ud55c\ub2e4.<\/p>\n

$$a = r\\alpha \\tag{3}$$<\/p>\n

### 3.5.4 \uacf5\uc2dd \uc720\ub3c4 \uc804\uac1c \uacfc\uc815<\/p>\n

\uc704\uc758 \uc138 \uac00\uc9c0 \uc218\uc2dd\uc744 \uc5f0\ub9bd\ud558\uc5ec \uc6b0\ub9ac\uac00 \uc2e4\ud5d8\uc801\uc73c\ub85c \uad6c\ud558\uace0\uc790 \ud558\ub294 \uad00\uc131\ubaa8\uba58\ud2b8 $I$\uc5d0 \ub300\ud55c \uc2dd\uc744 \ub3c4\ucd9c\ud560 \uc218 \uc788\ub2e4.<\/p>\n

\uba3c\uc800, \uc2dd (3)\uc758 \uad6c\uc18d \uc870\uac74 $a = r\\alpha$\ub97c \uc2dd (1)\uc5d0 \ub300\uc785\ud55c \ud6c4, \uc7a5\ub825 $T$\uc5d0 \ub300\ud558\uc5ec \uc2dd\uc744 \uc815\ub9ac\ud55c\ub2e4.<\/p>\n

$$mg - T = m(r\\alpha)$$<\/p>\n

$$T = m(g - r\\alpha) \\tag{4}$$<\/p>\n

\ub3c4\ucd9c\ub41c \uc7a5\ub825 $T$\ub97c \uc2dd (2)\uc758 \ud68c\uc804 \uc6b4\ub3d9 \ubc29\uc815\uc2dd\uc5d0 \ub300\uc785\ud55c\ub2e4.<\/p>\n

$$r \\cdot \\left[ m(g - r\\alpha) \\right] = I\\alpha$$<\/p>\n

\uc88c\ubcc0\uc758 \uad04\ud638\ub97c \ud480\uc5b4\uc11c \uc804\uac1c\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n

$$mgr - mr^2\\alpha = I\\alpha$$<\/p>\n

\uc6b0\ub9ac\uc758 \ucd5c\uc885 \ubaa9\ud45c\uc778 \uad00\uc131\ubaa8\uba58\ud2b8 $I$\uc5d0 \ub300\ud558\uc5ec \uc2dd\uc744 \uc815\ub9ac\ud558\uae30 \uc704\ud574 \uc591\ubcc0\uc744 \uac01\uac00\uc18d\ub3c4 $\\alpha$\ub85c \ub098\ub208\ub2e4.<\/p>\n

$$I = \\frac{mgr - mr^2\\alpha}{\\alpha} = \\frac{mgr}{\\alpha} - mr^2$$<\/p>\n

\ub9c8\uc9c0\ub9c9\uc73c\ub85c \uacf5\ud1b5\ud56d\uc778 $mr^2$\uc73c\ub85c \uc6b0\ubcc0\uc744 \ubb36\uc5b4\ub0b4\uba74 \ucd5c\uc885\uc801\uc778 \uad00\uc131\ubaa8\uba58\ud2b8 \uc2e4\ud5d8\uc2dd\uc774 \uc644\uc131\ub41c\ub2e4.<\/p>\n

$$I = mr^2 \\left( \\frac{g}{r\\alpha} - 1 \\right)$$<\/p>\n

\uc774 \uc720\ub3c4\ub41c \ucd5c\uc885 \uacf5\uc2dd\uc744 \ud1b5\ud574, \uc6b0\ub9ac\ub294 \uc2e4\ud5d8\uc2e4\uc5d0\uc11c \uc9c1\uc811 \uce21\uc815\ud55c \uae30\ud558\ud559\uc801 \uc0c1\uc218(\ucd94\uc758 \uc9c8\ub7c9 $m$, \ud68c\uc804\ucd95\uc758 \ubc18\uc9c0\ub984 $r$)\uc640 \uc911\ub825\uac00\uc18d\ub3c4 $g$, \uadf8\ub9ac\uace0 SPARKvue \ub370\uc774\ud130 \uc218\uc9d1 \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c \ud1b5\ud574 \uc120\ud615 \ud68c\uadc0(Linear Fit)\ub85c \uc5bb\uc5b4\ub0b8 **\uac01\uac00\uc18d\ub3c4(Angular Acceleration)** $\\alpha$ \uac12\ub9cc\uc744 \ub300\uc785\ud568\uc73c\ub85c\uc368 \ubcf5\uc7a1\ud55c \ud615\ud0dc\uc758 \uac15\uccb4 \uad00\uc131\ubaa8\uba58\ud2b8 $I$\ub97c \uc815\ub7c9\uc801\uc73c\ub85c \uacb0\uc815\ud560 \uc218 \uc788\ub2e4.<\/p>\n

# 4. \uc2e4\ud5d8 \ubc29\ubc95<\/p>\n

\ubcf8 \uc2e4\ud5d8\uc740 \ud06c\uac8c \ub450 \ubd80\ubd84\uc73c\ub85c \ub098\ub258\uc5b4 \uc9c4\ud589\ub41c\ub2e4. **\uc2e4\ud5d8 A**\uc5d0\uc11c\ub294 \ub099\ud558\ud558\ub294 \ucd94\ub97c \uc774\uc6a9\ud558\uc5ec \uc6d0\ud310\uacfc \uc6d0\ud658\uc758 \uad00\uc131\ubaa8\uba58\ud2b8\ub97c \uce21\uc815\ud558\uace0, **\uc2e4\ud5d8 B**\uc5d0\uc11c\ub294 \ud68c\uc804\ud558\ub294 \uc6d0\ud310 \uc704\uc5d0 \uc6d0\ud658\uc744 \ub5a8\uc5b4\ub728\ub824 \uac01\uc6b4\ub3d9\ub7c9\uc774 \ubcf4\uc874\ub418\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4.<\/p>\n

## 4.1 \uc2e4\ud5d8 A \uad00\uc131\ubaa8\uba58\ud2b8 \uce21\uc815(Measurement of Moment of Inertia)<\/p>\n

\"null\"<\/p>\n

1. **\ud68c\uc804 \uc7a5\uce58 \uc124\uce58**: [\uadf8\ub9bc 3]\uacfc \uac19\uc774 \ud68c\uc804 \uc2a4\ud0e0\ub4dc\ub97c \uc124\uce58\ud558\uace0 \uc6d0\ud310(Rotational Disk)\uc744 \ud68c\uc804\ucd95\uc5d0 \uc5f0\uacb0\ud55c\ub2e4. \uc218\ud3c9\uc790(Leveler)\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud68c\uc804 \uc2a4\ud0e0\ub4dc\uc640 \uc6d0\ud310\uc758 \uc218\ud3c9\uc744 \uc815\ud655\ud558\uac8c \ub9de\ucd98\ub2e4.<\/p>\n

2. **\uc2a4\ub9c8\ud2b8\uac8c\uc774\ud2b8 \uc124\uc815**: \uc2a4\ub9c8\ud2b8\uac8c\uc774\ud2b8(Smart Gate)\ub97c \ud68c\uc804 \uc2a4\ud0e0\ub4dc\uc5d0 \uace0\uc815\ud55c\ub2e4. \uc774\ub54c \uc2a4\ub9c8\ud2b8\uac8c\uc774\ud2b8\uc758 \uc13c\uc11c\uac00 \ud68c\uc804\ucd95\uc5d0 \uc5f0\uacb0\ub41c\u6ed1\u8f6e(Pulley)\uc758 \ud648(Spoke)\uc744 \uc815\ud655\ud788 \uac10\uc9c0\ud560 \uc218 \uc788\ub3c4\ub85d \uc704\uce58\ub97c \uc870\uc815\ud55c\ub2e4.<\/p>\n

3. **\uae30\ucd08 \ub370\uc774\ud130 \uce21\uc815**: \ucd94\uc640 \ucd94\uac78\uc774\uc758 \uc804\uccb4 \uc9c8\ub7c9 $m$\uc744 \uc804\uc790\uc800\uc6b8\ub85c \uce21\uc815\ud558\uace0, \uc2e4\uc774 \uac10\uae38 \ud68c\uc804\ucd95\uc758 \ubc18\uc9c0\ub984 $r$\uc744 \uc720\ubcf4\ub77c\uce74\ub9ac\ud30c(Vernier Calipers)\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc815\ubc00\ud558\uac8c \uce21\uc815\ud55c\ub2e4.<\/p>\n

4. **\uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc900\ube44**: SPARKvue \uc571\uc744 \uc2e4\ud589\ud558\uace0 **[Smart Gate Only]** -> [Smart Pulley (Rotational)]\uc744 \uc120\ud0dd\ud55c\ub2e4. **Spoke Angle**\uc740 $36^\\circ$ (\ub610\ub294 \uc7a5\uce58\uc5d0 \ub9de\ub294 \uac12)\ub85c \uc124\uc815\ud558\uace0, \uce21\uc815 \ubb3c\ub9ac\ub7c9\uc73c\ub85c **Velocity** \uc640 **Acceleration**\uc744 \uc120\ud0dd\ud55c\ub2e4.<\/p>\n

5. **\uc6d0\ud310 \uac01\uac00\uc18d\ub3c4 \uce21\uc815**: \ud68c\uc804\ucd95\uc5d0 \uc2e4\uc744 \uac10\uace0 \ucd94\ub97c \ub099\ud558\uc2dc\ud0a4\ub294 \ub3d9\uc548 \uac01\uc18d\ub3c4\ub97c \uce21\uc815\ud55c\ub2e4. \ub370\uc774\ud130 \uadf8\ub798\ud504\uc5d0\uc11c \uac01\uac00\uc18d\ub3c4($\\alpha$)\uac00 \uc77c\uc815\ud55c \uad6c\uac04\uc744 \uc120\ud0dd\ud558\uc5ec \uc120\ud615 \ud68c\uadc0(Linear Fit)\ub97c \uc218\ud589\ud558\uace0 \uadf8 \uae30\uc6b8\uae30 \uac12\uc744 \uae30\ub85d\ud55c\ub2e4.<\/p>\n

\"\"<\/p>\n

6. **\ubc18\ubcf5 \uce21\uc815**: \uacfc\uc815 5\ub97c \ucd1d 5\ud68c \ubc18\ubcf5\ud558\uc5ec \uc6d0\ud310\uc758 \ud3c9\uade0 \uac01\uac00\uc18d\ub3c4\ub97c \uad6c\ud558\uace0, \uc774\ub97c \ud1b5\ud574 $I_{disk}$\ub97c \uacc4\uc0b0\ud55c\ub2e4.<\/p>\n

7. **\uc6d0\ud658(Mass Ring) \ucd94\uac00**: \uc6d0\ud310 \uc704\uc5d0 \uc6d0\ud658\uc744 \uc62c\ub9ac\uace0 \uacfc\uc815 5~6\uc744 \ubc18\ubcf5\ud55c\ub2e4. \uc774\ub54c \uce21\uc815\ub41c \uac12\uc740 \uc6d0\ud310\uacfc \uc6d0\ud658\uc758 \ud569\uc131 \uad00\uc131\ubaa8\uba58\ud2b8($I_{total}$)\uc774\uba70, \uc5ec\uae30\uc11c \uc55e\uc11c \uad6c\ud55c $I_{disk}$\ub97c \ube7c\uc11c $I_{ring}$\uc758 \uc2e4\ud5d8\uac12\uc744 \ub3c4\ucd9c\ud55c\ub2e4.<\/p>\n

## 4.2 \uc2e4\ud5d8 B \uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874(Conservation of Angular Momentum)<\/p>\n

1. **\uc7a5\uce58 \uc7ac\uc815\ub82c**: \uc2e4\ud5d8 A\uc5d0\uc11c \uc0ac\uc6a9\ud588\ub358 \uc2e4\uacfc \ucd94\ub97c \uc81c\uac70\ud55c\ub2e4. \uacc4\ub294 \uc678\ubd80 \ud1a0\ud06c\uac00 \uc5c6\ub294 \uc790\uc720 \ud68c\uc804 \uc0c1\ud0dc\uc5ec\uc57c \ud55c\ub2e4.<\/p>\n

2. **\ucd08\uae30 \ud68c\uc804 \ubc0f \uce21\uc815 \uc2dc\uc791**: \uc6d0\ud310\uc744 \uc190\uc73c\ub85c \uac00\ubccd\uac8c \ub3cc\ub824 \ud68c\uc804\uc2dc\ud0a8 \ud6c4, SPARKvue\uc758 \uce21\uc815(Start) \ubc84\ud2bc\uc744 \ub204\ub978\ub2e4.<\/p>\n

3. **\ucd08\uae30 \uac01\uc18d\ub3c4($\\omega_1$) \uce21\uc815**: \uc6d0\ud310\uc774 \uc548\uc815\uc801\uc73c\ub85c \ud68c\uc804\ud560 \ub54c, \uc6d0\ud658\uc744 \ub5a8\uc5b4\ub728\ub9ac\uae30 \uc9c1\uc804\uc758 \uac01\uc18d\ub3c4 $\\omega_1$\uc744 \uae30\ub85d\ud55c\ub2e4.<\/p>\n

4. **\uc6d0\ud658 \ud22c\ud558**: \uc6d0\ud310\uc758 \ud68c\uc804\ucd95\uc5d0 \ub9de\ucdb0 \uc6d0\ud658\uc744 \uc870\uc2ec\uc2a4\ub7fd\uac8c \ub5a8\uc5b4\ub728\ub9b0\ub2e4. \uc774\ub54c \uc6d0\ud658\uc774 \uc6d0\ud310\uc758 \uc911\uc2ec\uc5d0 \uc815\ud655\ud788 \uc548\ucc29\ud558\ub3c4\ub85d \uc8fc\uc758\ud55c\ub2e4.<\/p>\n

5. **\ub098\uc911 \uac01\uc18d\ub3c4($\\omega_2$) \uce21\uc815**: \uc6d0\ud658\uc774 \uc548\ucc29\ud55c \ud6c4, \uc6d0\ud310\uacfc \uc6d0\ud658\uc774 \ud568\uaed8 \ud68c\uc804\ud558\uba70 \uc548\uc815\ub41c \uc0c1\ud0dc\uc758 \uac01\uc18d\ub3c4 $\\omega_2$\ub97c \uae30\ub85d\ud55c\ub2e4.<\/p>\n

6. **\ub370\uc774\ud130 \ubd84\uc11d**: \uce21\uc815\ub41c $\\omega_1, \\omega_2$\uc640 \uc2e4\ud5d8 A\uc5d0\uc11c \uc5bb\uc740 $I_{disk}, I_{total}$\uc744 \uc0ac\uc6a9\ud558\uc5ec \ucda9\ub3cc \uc804\ud6c4\uc758 \uac01\uc6b4\ub3d9\ub7c9 $L_1, L_2$\ub97c \uacc4\uc0b0\ud558\uace0 \ubcf4\uc874 \uc5ec\ubd80\ub97c \ud655\uc778\ud55c\ub2e4.<\/p>\n

7. **\ubc18\ubcf5 \uce21\uc815**: \uacfc\uc815 2~6\uc744 \ucd1d 5\ud68c \ubc18\ubcf5\ud558\uc5ec \ub370\uc774\ud130\uc758 \uc2e0\ub8b0\uc131\uc744 \ud655\ubcf4\ud55c\ub2e4.<\/p>\n

# 5. \uc2e4\ud5d8 \uacb0\uacfc<\/p>\n

## 5.1 \uc2e4\ud5d8 \uae30\ubcf8 \uc81c\uc6d0 (Constants)<\/p>\n

\uc2e4\ud5d8 A\uc640 B\uc758 \uacc4\uc0b0\uc5d0 \uacf5\ud1b5\uc73c\ub85c \uc0ac\uc6a9\ub41c \uae30\ud558\ud559\uc801 \uc0c1\uc218 \ubc0f \uc9c8\ub7c9 \uce21\uc815\uac12\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
\ub9e4\uac1c\ubcc0\uc218 (Parameter)<\/strong><\/th>\n\uae30\ud638 (Symbol)<\/strong><\/th>\n\uce21\uc815\uac12 (Value)<\/strong><\/th>\n\ub2e8\uc704 (Unit)<\/strong><\/th>\n<\/tr>\n<\/thead>\n
\ucd94\uc758 \uc9c8\ub7c9<\/strong> (Hanging Mass)<\/td>\n$m$<\/td>\n0.145<\/td>\n$\\text{kg}$<\/td>\n<\/tr>\n
\ud68c\uc804\ucd95 \ubc18\uc9c0\ub984<\/strong> (Axle Radius)<\/td>\n$r$<\/td>\n0.0115<\/td>\n$\\text{m}$<\/td>\n<\/tr>\n
\uc6d0\ud310 \uc9c8\ub7c9<\/strong> (Disk Mass)<\/td>\n$M_{disk}$<\/td>\n1.427<\/td>\n$\\text{kg}$<\/td>\n<\/tr>\n
\uc6d0\ud310 \ubc18\uc9c0\ub984<\/strong> (Disk Radius)<\/td>\n$R_{disk}$<\/td>\n0.1145<\/td>\n$\\text{m}$<\/td>\n<\/tr>\n
\uc6d0\ud658 \uc9c8\ub7c9<\/strong> (Ring Mass)<\/td>\n$M_{ring}$<\/td>\n1.441<\/td>\n$\\text{kg}$<\/td>\n<\/tr>\n
\uc6d0\ud658 \ub0b4\uacbd<\/strong> (Ring Inner Radius)<\/td>\n$R_1$<\/td>\n0.054<\/td>\n$\\text{m}$<\/td>\n<\/tr>\n
\uc6d0\ud658 \uc678\uacbd<\/strong> (Ring Outer Radius)<\/td>\n$R_2$<\/td>\n0.0635<\/td>\n$\\text{m}$<\/td>\n<\/tr>\n
\uc911\ub825\uac00\uc18d\ub3c4<\/strong> (Gravity)<\/td>\n$g$<\/td>\n9.8<\/td>\n$\\text{m\/s}^2$<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

## 5.2 \uc2e4\ud5d8 A \uad00\uc131\ubaa8\uba58\ud2b8 \uce21\uc815 (Rotational Inertia)<\/p>\n

### 5.2.1 \uce21\uc815 \ub370\uc774\ud130 \ubc0f \uc2e4\ud5d8\uac12 \uacc4\uc0b0<\/p>\n

\uc6d0\ud310 \ub2e8\ub3c5 \ud68c\uc804\uacfc \uc6d0\ud310+\uc6d0\ud658 \uacb9\uce68 \ud68c\uc804\uc5d0 \ub300\ud558\uc5ec \uac01\uac01 5\ud68c\uc529 \ucd94\ub97c \ub099\ud558\uc2dc\ucf1c \uac01\uac00\uc18d\ub3c4($\\alpha$)\ub97c \uce21\uc815\ud558\uc600\ub2e4. \uc2e4\ud5d8\uc801 \uad00\uc131\ubaa8\uba58\ud2b8\ub294 \uc2dd $I = mr^2 (\\frac{g}{r\\alpha} - 1)$\uc744 \uc774\uc6a9\ud558\uc5ec \ub3c4\ucd9c\ud558\uc600\ub2e4. \uc6d0\ud658 \ub2e8\ub3c5\uc758 \uad00\uc131\ubaa8\uba58\ud2b8 \uc2e4\ud5d8\uac12\uc740 \uc804\uccb4 \uad00\uc131\ubaa8\uba58\ud2b8\uc5d0\uc11c \uc6d0\ud310\uc758 \uad00\uc131\ubaa8\uba58\ud2b8\ub97c \ube7c\uc11c($I_{ring} = I_{total} - I_{disk}$) \uacc4\uc0b0\ud558\uc600\ub2e4.<\/p>\n\n\n\n\n\n\n\n\n\n\n
\uce21\uc815 \ud69f\uc218 $(Trial)$<\/strong><\/th>\n\uc6d0\ud310 $\u03b1 (rad\/s^2)$<\/strong><\/th>\n\uc6d0\ud310 $I_{disk}\u200b (kg \\cdot m^2)$<\/strong><\/th>\n\uc6d0\ud310+\uc6d0\ud658 $\u03b1 (rad\/s^2)$<\/strong><\/th>\n\ucd1d \uad00\uc131\ubaa8\uba58\ud2b8 $I_{total}\u200b (kg \\cdot m^2)$<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Trial 1<\/strong><\/td>\n1.860<\/td>\n0.008767<\/td>\n1.210<\/td>\n0.013486<\/td>\n<\/tr>\n
Trial 2<\/strong><\/td>\n1.850<\/td>\n0.008814<\/td>\n1.210<\/td>\n0.013486<\/td>\n<\/tr>\n
Trial 3<\/strong><\/td>\n1.850<\/td>\n0.008814<\/td>\n1.220<\/td>\n0.013375<\/td>\n<\/tr>\n
Trial 4<\/strong><\/td>\n1.850<\/td>\n0.008814<\/td>\n1.210<\/td>\n0.013486<\/td>\n<\/tr>\n
Trial 5<\/strong><\/td>\n1.850<\/td>\n0.008767<\/td>\n1.210<\/td>\n0.013486<\/td>\n<\/tr>\n
\ud3c9\uade0 (AVERAGE)<\/strong><\/td>\n1.8525<\/strong><\/td>\n0.008795<\/strong><\/td>\n1.2120<\/strong><\/td>\n0.013464<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

### 5.2.2 \uc624\ucc28 \ubd84\uc11d (Error Analysis Summary)<\/p>\n

\uc6d0\ud310\uacfc \uc6d0\ud658\uc758 \uc774\ub860\uc801 \uad00\uc131\ubaa8\uba58\ud2b8\ub294 \uac01\uac01 $I_{disk} = \\frac{1}{2}MR^2$, $I_{ring} = \\frac{1}{2}M(R_1^2 + R_2^2)$ \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud558\uc5ec \uacc4\uc0b0\ud558\uc600\uc73c\uba70, \uc774\ub97c \uc2e4\ud5d8 \ud3c9\uade0\uac12\uacfc \ube44\uad50\ud558\uc600\ub2e4.<\/p>\n\n\n\n\n\n\n
\ud56d\ubaa9 $(Item)$<\/strong><\/th>\n\uc2e4\ud5d8\uac12 $I_{exp\u200b} (kg \\cdot m^2)$<\/strong><\/th>\n\uc774\ub860\uac12 $I_{theo}\u200b (kg \\cdot m^2)$<\/strong><\/th>\n\uc0c1\ub300 \uc624\ucc28\uc728 $(\\%)$<\/strong><\/th>\n<\/tr>\n<\/thead>\n
\uc6d0\ud310 (Disk Only)<\/strong><\/td>\n0.008795<\/td>\n0.009354<\/td>\n5.977<\/strong><\/td>\n<\/tr>\n
\uc6d0\ud658 (Mass Ring)<\/strong><\/td>\n0.004669<\/td>\n0.005006<\/td>\n6.736<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

_\u203b \uc6d0\ud658\uc758 \uc2e4\ud5d8\uac12 $I_{ring}$\uc740 (\ucd1d \uad00\uc131\ubaa8\uba58\ud2b8 \ud3c9\uade0 0.013464) - (\uc6d0\ud310 \uad00\uc131\ubaa8\uba58\ud2b8 \ud3c9\uade0 0.008795) = 0.004669 \ub85c \uacc4\uc0b0\ub428._<\/p>\n

## 5.3 \uc2e4\ud5d8 B \uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874 (Conservation of Angular Momentum)<\/p>\n

\ud68c\uc804\ud558\ub294 \uc6d0\ud310 \uc704\uc5d0 \uc6d0\ud658\uc744 \ub099\ud558\uc2dc\ud0a4\ub294 \uc644\uc804 \ube44\ud0c4\uc131 \ucda9\ub3cc \uc2e4\ud5d8\uc744 5\ud68c \ubc18\ubcf5\ud558\uc600\ub2e4. \ucda9\ub3cc \uc804\uc758 \ucd08\uae30 \uac01\uc6b4\ub3d9\ub7c9 $L_1 = I_{disk} \\cdot \\omega_1$\uacfc \ucda9\ub3cc \ud6c4\uc758 \ub098\uc911 \uac01\uc6b4\ub3d9\ub7c9 $L_2 = I_{total} \\cdot \\omega_2$\ub97c \uacc4\uc0b0\ud558\uc5ec \ub450 \uac12\uc758 \ucc28\uc774\ub97c \ud655\uc778\ud558\uc600\ub2e4.<\/p>\n

_(\uc8fc\uc758: \uac01\uc6b4\ub3d9\ub7c9 \uacc4\uc0b0 \uc2dc \uc0ac\uc6a9\ub41c \uad00\uc131\ubaa8\uba58\ud2b8 $I$\ub294 \uc2e4\ud5d8 A\uc5d0\uc11c \uad6c\ud55c \uc2e4\ud5d8 \ud3c9\uade0\uac12\uc744 \uc801\uc6a9\ud558\uc600\ub2e4.)_<\/p>\n\n\n\n\n\n\n\n\n\n\n
\uce21\uc815 \ud69f\uc218 $(Trial)$<\/strong><\/th>\n\ucd08\uae30 $\u03c9_1\u200b (rad\/s)$<\/strong><\/th>\n\ub098\uc911 $\u03c9_2\u200b (rad\/s)$<\/strong><\/th>\n\ucd08\uae30 $L_1\u200b (kg \\cdot m^2\/s)$<\/strong><\/th>\n\ub098\uc911 $L_2\u200b (kg\u22c5m2\/s)$<\/strong><\/th>\n\uc624\ucc28\uc728 $(\\%)$<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Trial 1<\/strong><\/td>\n8.730<\/td>\n5.620<\/td>\n0.076781<\/td>\n0.075668<\/td>\n1.450<\/td>\n<\/tr>\n
Trial 2<\/strong><\/td>\n12.200<\/td>\n7.920<\/td>\n0.107300<\/td>\n0.106635<\/td>\n0.619<\/td>\n<\/tr>\n
Trial 3<\/strong><\/td>\n13.900<\/td>\n9.120<\/td>\n0.122251<\/td>\n0.122792<\/td>\n0.442<\/td>\n<\/tr>\n
Trial 4<\/strong><\/td>\n14.700<\/td>\n9.460<\/td>\n0.129288<\/td>\n0.127370<\/td>\n1.483<\/td>\n<\/tr>\n
Trial 5<\/strong><\/td>\n15.500<\/td>\n10.400<\/td>\n0.136324<\/td>\n0.140026<\/td>\n2.716<\/td>\n<\/tr>\n
\ud3c9\uade0 (AVERAGE)<\/strong><\/td>\n13.006<\/strong><\/td>\n8.504<\/strong><\/td>\n0.114389<\/strong><\/td>\n0.114498<\/strong><\/td>\n1.342<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

_\u203b \uc624\ucc28\uc728 \uacc4\uc0b0\uc2dd: $\\delta = \\frac{\\|L_1 - L_2\\|}{L_1} \\times 100 \\%$_<\/p>\n

# 6.\ubd84\uc11d \ubc0f \ud1a0\uc758<\/p>\n

\"\"<\/p>\n

\ubcf8 \ubd84\uc11d\uc5d0\uc11c\ub294 \uc2e4\ud5d8 A(\uad00\uc131\ubaa8\uba58\ud2b8 \uce21\uc815)\uc640 \uc2e4\ud5d8 B(\uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874)\uc758 \uce21\uc815\uac12 \ubc0f \uc774\ub860\uac12\uc744 \uc815\ub7c9\uc801\uc774\uace0 \uc2dc\uac01\uc801\uc73c\ub85c \ube44\uad50\ud558\uae30 \uc704\ud574 Python \uae30\ubc18\uc758 \ub370\uc774\ud130 \ubd84\uc11d \ubc0f \uc2dc\uac01\ud654 \uc54c\uace0\ub9ac\uc998\uc744 \ud65c\uc6a9\ud558\uc600\ub2e4. \uc774\ub97c \ud1b5\ud574 \uc808\ub300\uc801\uc778 \ubb3c\ub9ac\ub7c9\uc758 \ube44\uad50(\ub9c9\ub300\uadf8\ub798\ud504)\uc640 \uc0c1\ub300 \uc624\ucc28\uc758 \ubcc0\ub3d9 \ucd94\uc774(\uaebe\uc740\uc120 \uadf8\ub798\ud504)\ub97c \uc774\uc911 \ucd95(Dual-axis) \ucf64\ubcf4 \ucc28\ud2b8\ub85c \uad6c\ud604\ud558\uc5ec \ub370\uc774\ud130\uc758 \uc2e0\ub8b0\uc131\uacfc \uacc4\ud1b5 \uc624\ucc28\ub97c \uc9c1\uad00\uc801\uc73c\ub85c \ubd84\uc11d\ud558\uc600\ub2e4.<\/p>\n

\uad00\uc131\ubaa8\uba58\ud2b8 \uc2e4\ud5d8\uac12 $I_{exp}$\uc640 \uc774\ub860\uac12 $I_{theo}$ \uc0ac\uc774\uc758 \uc0c1\ub300 \uc624\ucc28\uc728 $\\delta_I$, \uadf8\ub9ac\uace0 \ucda9\ub3cc \uc804\ud6c4\uc758 \uac01\uc6b4\ub3d9\ub7c9 \uc624\ucc28\uc728 $\\delta_L$\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ud558\uc5ec \ubd84\uc11d\uc5d0 \uc801\uc6a9\ud558\uc600\ub2e4.<\/p>\n

$$\\delta_I(\\%) = \\frac{|I_{exp} - I_{theo}|}{I_{theo}} \\times 100\\%, \\qquad \\delta_L(\\%) = \\frac{|L_1 - L_2|}{L_1} \\times 100\\%$$<\/p>\n

## 6.1 \uc2e4\ud5d8 A: \uc6d0\ud310\uc758 \uad00\uc131\ubaa8\uba58\ud2b8 \uc815\ubc00 \ube44\uad50 (Disk Only)<\/p>\n

\uccab \ubc88\uc9f8 \uadf8\ub798\ud504\ub294 5\ud68c\uc5d0 \uac78\uce5c \uc6d0\ud310(Disk) \ub2e8\ub3c5 \ud68c\uc804 \uc2e4\ud5d8\uc5d0\uc11c \uce21\uc815\ub41c \uad00\uc131\ubaa8\uba58\ud2b8 \uc2e4\ud5d8\uac12\uacfc \uae30\ud558\ud559\uc801 \uc81c\uc6d0\uc5d0 \uae30\ubc18\ud55c \uc774\ub860\uac12\uc744 \ube44\uad50\ud55c \uac83\uc774\ub2e4.<\/p>\n

\"\"<\/p>\n

\uadf8\ub798\ud504\ub97c \ubd84\uc11d\ud558\uba74, 5\ubc88\uc758 Trial \ub0b4\ub0b4 \uce21\uc815\ub41c \uc2e4\ud5d8\uac12(\ud30c\ub780\uc0c9 \ub9c9\ub300)\uc774 \uc774\ub860\uac12(\uc8fc\ud669\uc0c9 \ub9c9\ub300)\ubcf4\ub2e4 \ubbf8\uc138\ud558\uac8c \ub0ae\uac8c \ud615\uc131\ub418\uc5b4 \uc788\uc74c\uc744 \uc54c \uc218 \uc788\ub2e4. \uadf8 \uacb0\uacfc \ube68\uac04\uc0c9 \uc810\uc120\uc73c\ub85c \ud45c\uc2dc\ub41c \uc0c1\ub300 \uc624\ucc28\uc728\uc740 \uc57d **5.97%** \ubd80\uadfc\uc5d0\uc11c \ub9e4\uc6b0 \uc77c\uad00\ub418\uac8c \uc720\uc9c0\ub418\uace0 \uc788\ub2e4.<\/p>\n

\ub370\uc774\ud130\uc758 \uc0b0\ud3ec\ub3c4(\ubcc0\ub3d9\uc131)\uac00 \uadf9\ud788 \ub0ae\ub2e4\ub294 \uac83\uc740 \uc2e4\ud5d8\uc790\uc758 \ub099\ud558 \uc870\uc791\uc774\ub098 SPARKvue\ub97c \ud1b5\ud55c \uac01\uac00\uc18d\ub3c4($\\alpha$) \uce21\uc815, \uadf8\ub9ac\uace0 \uc120\ud615 \ud68c\uadc0(Linear fit) \uacfc\uc815\uc774 \ub9e4\uc6b0 \uc815\ubc00\ud558\uac8c \uc218\ud589\ub418\uc5c8\uc74c\uc744 \uc758\ubbf8\ud55c\ub2e4. \uc989, \uc774 \uc57d 6%\uc758 \uc624\ucc28\ub294 \ubb34\uc791\uc704 \uc624\ucc28(Random Error)\uac00 \uc544\ub2cc \uc2e4\ud5d8 \uc7a5\ube44 \uc790\uccb4\uc758 \uad6c\uc870\uc801 \uc694\uc778\uc5d0 \uc758\ud55c **\uacc4\ud1b5 \uc624\ucc28(Systematic Error)** \ub85c \ud574\uc11d\ud574\uc57c \ud0c0\ub2f9\ud558\ub2e4.<\/p>\n

## 6.2 \uc2e4\ud5d8 A: \uc6d0\ud658\uc758 \uad00\uc131\ubaa8\uba58\ud2b8 \uc815\ubc00 \ube44\uad50 (Mass Ring)<\/p>\n

\ub450 \ubc88\uc9f8 \uadf8\ub798\ud504\ub294 \uc6d0\ud310\uacfc \uc6d0\ud658\uc774 \uacb0\ud569\ub41c \uc0c1\ud0dc\uc5d0\uc11c \uce21\uc815\ud55c \ucd1d \uad00\uc131\ubaa8\uba58\ud2b8($I_{total}$)\uc5d0\uc11c \uc6d0\ud310\uc758 \uad00\uc131\ubaa8\uba58\ud2b8($I_{disk}$)\ub97c \ucc28\uac10\ud558\uc5ec \ub3c4\ucd9c\ud55c \uc6d0\ud658(Ring) \ub2e8\ub3c5\uc758 \uc2e4\ud5d8\uac12\uacfc \uc774\ub860\uac12\uc744 \ube44\uad50\ud55c \uacb0\uacfc\uc774\ub2e4.<\/p>\n

\"\"<\/p>\n

\uc6d0\ud658\uc758 \uad00\uc131\ubaa8\uba58\ud2b8 \uc624\ucc28\uc728 \uc5ed\uc2dc \uc57d **6.73%** \ub85c \uc6d0\ud310 \uc2e4\ud5d8\uacfc \uc720\uc0ac\ud55c \uacbd\ud5a5\uc131\uacfc \uc548\uc815\uc801\uc778 \uc624\ucc28 \ubc94\uc704\ub97c \ubcf4\uc5ec\uc900\ub2e4. \uc2e4\ud5d8 A \uc804\uccb4\uc5d0 \uac78\uccd0 \uc2e4\ud5d8\uac12\uc774 \uc774\ub860\uac12\ubcf4\ub2e4 \uc57d 6% \uc791\uac8c \uc0b0\ucd9c($I_{exp} < I_{theo}$)\ub41c \uc6d0\uc778\uc740 \ub2e4\uc74c \ub450 \uac00\uc9c0\ub85c \uc2ec\uce35 \ubd84\uc11d\ud560 \uc218 \uc788\ub2e4.<\/p>\n

1. **\uc2e4\uc758 \ub450\uaed8\uc5d0 \ub530\ub978 \uc720\ud6a8 \ubc18\uc9c0\ub984(Effective Radius) \uc99d\uac00:**<\/p>\n

\uc2e4\ud5d8 \uacf5\uc2dd $I = mr^2 (\\frac{g}{r\\alpha} - 1)$\uc5d0\uc11c \ud68c\uc804\ucd95\uc758 \ubc18\uc9c0\ub984 $r$\uc740 \uc81c\uacf1\uc73c\ub85c \ube44\ub840\ud558\uc5ec \uacb0\uacfc\uac12\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce5c\ub2e4. \uc6b0\ub9ac\uac00 \ub300\uc785\ud55c $r = 0.0115,\\text{m}$\ub294 \uc2e4\uc774 \uac10\uae30\uc9c0 \uc54a\uc740 \ub9e8 \ucd95\uc758 \ubc18\uc9c0\ub984\uc774\ub2e4. \ud558\uc9c0\ub9cc \uc2e4\uc81c\ub85c\ub294 \ucd95\uc5d0 \uac10\uae34 \uc2e4\uc758 \ub450\uaed8($r_{string}$)\uc640 \uacb9\uce68 \ud604\uc0c1\uc73c\ub85c \uc778\ud574, \ud1a0\ud06c\uac00 \uc791\uc6a9\ud558\ub294 \uc2e4\uc81c \uc720\ud6a8 \ubc18\uc9c0\ub984\uc740 $r_{eff} = r + r_{string}\/2$ \ub85c \ubbf8\uc138\ud558\uac8c \ub354 \ud06c\ub2e4. \uacf5\uc2dd\uc5d0 \uc2e4\uc81c\ubcf4\ub2e4 \uc791\uc740 $r$ \uac12\uc744 \ub300\uc785\ud588\uae30 \ub54c\ubb38\uc5d0, \uc0b0\ucd9c\ub41c \uad00\uc131\ubaa8\uba58\ud2b8 \uc2e4\ud5d8\uac12\uc774 \uc774\ub860\uac12\ubcf4\ub2e4 \uc791\uac8c \ub3c4\ucd9c\ub41c \uac83\uc774\ub2e4.<\/p>\n

2. **\uac15\uccb4\uc758 \uc774\uc0c1\uc801 \uc9c8\ub7c9 \ubd84\ud3ec \uac00\uc815\uc758 \ud55c\uacc4:**<\/p>\n

\uc774\ub860\uac12 \uacc4\uc0b0\uc5d0 \uc0ac\uc6a9\ub41c $0.5MR^2$ \ub4f1\uc758 \uacf5\uc2dd\uc740 \uac15\uccb4\uc758 \ubc00\ub3c4\uac00 \uc644\ubcbd\ud558\uac8c \uade0\uc77c\ud55c '\uc774\uc0c1\uc801\uc778 \uc5f0\uc18d\uccb4'\uc784\uc744 \uac00\uc815\ud55c\ub2e4. \uadf8\ub7ec\ub098 \uc2e4\uc81c \uc2e4\ud5d8\uc6a9 \uc6d0\ud310\uacfc \uc6d0\ud658\uc740 \uccb4\uacb0\uc744 \uc704\ud55c \uc911\uc559\uc758 \ud648\uc774\ub098 \ud540, \uc7ac\uc9c8\uc758 \ub9c8\ubaa8 \ub4f1\uc73c\ub85c \uc778\ud574 \uc9c8\ub7c9 \ubd84\ud3ec\uac00 \uc644\ubcbd\ud788 \uade0\uc77c\ud558\uc9c0 \uc54a\uc73c\uba70, \uc774\uac83\uc774 \uc774\ub860\uac12\uacfc\uc758 \ucc28\uc774\ub97c \ubc1c\uc0dd\uc2dc\ud0a8\ub2e4.<\/p>\n

## 6.3 \uc2e4\ud5d8 B: \uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874 \uc885\ud569 \ubd84\uc11d (Conservation of Angular Momentum)<\/p>\n

\uc138 \ubc88\uc9f8 \uadf8\ub798\ud504\ub294 \uc678\ub825\uc774 \ucc28\ub2e8\ub41c \uc0c1\ud0dc\uc5d0\uc11c \ud68c\uc804\ud558\ub294 \uc6d0\ud310\uc5d0 \uc6d0\ud658\uc744 \ub5a8\uc5b4\ub728\ub9ac\ub294 \uc644\uc804 \ube44\ud0c4\uc131 \ucda9\ub3cc \uc2e4\ud5d8\uc758 \uc804\ud6c4 \uac01\uc6b4\ub3d9\ub7c9($L_1$, $L_2$) \ubcc0\ud654\ub97c \ub098\ud0c0\ub0b8\ub2e4.<\/p>\n

\"\"<\/p>\n

\uc774 \ucc28\ud2b8\ub294 \ubcf8 \uc2e4\ud5d8\uc758 \ubc31\ubbf8\ub85c, \ub9c9\ub300\uadf8\ub798\ud504\ub97c \ubcf4\uba74 5\ud68c\uc758 Trial \ubaa8\ub450 \ucd08\uae30 \uac01\uc6b4\ub3d9\ub7c9 $L_1$\uacfc \ub098\uc911 \uac01\uc6b4\ub3d9\ub7c9 $L_2$\uc758 \ub192\uc774\uac00 \uac70\uc758 \uc644\ubcbd\ud558\uac8c \uc77c\uce58\ud55c\ub2e4. \uc6b0\uce21 \ucd95\uc744 \uae30\uc900\uc73c\ub85c \ud55c \uc624\ucc28\uc728(Difference) \uaebe\uc740\uc120\uc740 \ucd5c\uc18c 0.44%\uc5d0\uc11c \ucd5c\ub300 2.71% \uc0ac\uc774\ub97c \uae30\ub85d\ud558\uba70, **\ud3c9\uade0 1.34%** \ub77c\ub294 \uacbd\uc774\ub85c\uc6b4 \uc815\ud655\ub3c4\ub97c \ubcf4\uc5ec\uc900\ub2e4.<\/p>\n

\uc774\ub294 \uac01\uc18d\ub3c4\uac00 $\\omega_1$\uc5d0\uc11c $\\omega_2$\ub85c \uae09\uaca9\ud788 \uac10\uc18c\ud568\uc5d0\ub3c4 \ubd88\uad6c\ud558\uace0, \uad00\uc131\ubaa8\uba58\ud2b8\uc758 \uc99d\uac00\ud3ed($I_{disk} \\to I_{total}$)\uc774 \uc774\ub97c \uc815\ud655\ud788 \uc0c1\uc1c4\ud558\uc5ec $I_{disk}\\omega_1 = I_{total}\\omega_2$ \uac00 \uc131\ub9bd\ud568\uc744 \uc218\uce58\uc0c1\uc73c\ub85c \uc644\ubcbd\ud788 \uc785\uc99d\ud55c \uac83\uc774\ub2e4.<\/p>\n

\ub2e4\ub9cc, \ubbf8\uc138\ud55c \uc794\uc5ec \uc624\ucc28(\uc57d 1.3%)\uac00 \ubc1c\uc0dd\ud558\ub294 \uc6d0\uc778\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n

- **\ub9c8\ucc30 \ud1a0\ud06c(Frictional Torque):** \uc6d0\ud658\uc744 \ub5a8\uc5b4\ub728\ub9ac\uace0 \uc18d\ub3c4\uac00 \ub2e4\uc2dc \uc548\uc815\ud654($\\omega_2$)\ub418\uae30\uae4c\uc9c0\uc758 \uc9e7\uc740 \uc2dc\uac04 \ub3d9\uc548 \ubca0\uc5b4\ub9c1\uc758 \ub9c8\ucc30\uacfc \uacf5\uae30 \uc800\ud56d\uc774 \uc2dc\uc2a4\ud15c\uc5d0 \uc74c(-)\uc758 \uc54c\uc9dc \ud1a0\ud06c\ub85c \uc791\uc6a9\ud558\uc5ec \uac01\uc6b4\ub3d9\ub7c9\uc744 \ubbf8\uc138\ud558\uac8c \uac10\uc18c\uc2dc\ucf30\ub2e4.<\/p>\n

- **\ud22c\ud558 \uc2dc \uc911\uc2ec\ucd95 \ud3b8\ucc28:** \uc6d0\ud658\uc744 \ub5a8\uc5b4\ub728\ub9b4 \ub54c \uc644\ubcbd\ud558\uac8c \uc815\uc911\uc559\uc5d0 \ub193\uc774\uc9c0 \uc54a\uace0 \uc911\uc2ec\ucd95\uc5d0\uc11c $d$\ub9cc\ud07c \ube57\uaca8\ub098\uac8c \ub418\uba74, \ud3c9\ud589\ucd95 \uc815\ub9ac($I = I_{cm} + Md^2$)\uc5d0 \uc758\ud574 \ub098\uc911 \uad00\uc131\ubaa8\uba58\ud2b8\uac00 \uc608\uc0c1\ubcf4\ub2e4 \ucee4\uc9c0\uac8c \ub418\uc5b4 \uac01\uc18d\ub3c4 \ubcc0\ub3d9\uc5d0 \ubbf8\uc138\ud55c \uc624\ucc28\ub97c \uc720\ubc1c\ud55c\ub2e4.<\/p>\n

## 6.4 \uc885\ud569 \uacb0\ub860<\/p>\n

\ubcf8 \uc2e4\ud5d8\uc744 \ud1b5\ud574 \ub2e4\uc74c\uc758 \uc5ed\ud559\uc801 \uc6d0\ub9ac\ub4e4\uc744 \uc131\uacf5\uc801\uc73c\ub85c \uac80\uc99d\ud558\uc600\ub2e4.<\/p>\n

1. \uac15\uccb4\uc758 \uc9c8\ub7c9\uacfc \uae30\ud558\ud559\uc801 \ubd84\ud3ec(\ubc18\uc9c0\ub984)\uac00 \uad00\uc131\ubaa8\uba58\ud2b8\ub97c \uacb0\uc815\uc9d3\ub294 \ud575\uc2ec \uc694\uc18c\uc784\uc744 \uc2e4\ud5d8\uc2dd $I = mr^2 (\\frac{g}{r\\alpha} - 1)$\uc744 \ud1b5\ud574 \uc815\ub7c9\uc801\uc73c\ub85c \ud655\uc778\ud558\uc600\ub2e4. (\uc624\ucc28\uc728 5~6% \ub0b4\uc678)<\/p>\n

2. \uc678\ubd80 \uc54c\uc9dc \ud1a0\ud06c\uac00 0\uc778 \uace0\ub9bd\uacc4\uc5d0\uc11c\ub294 \uacc4 \ub0b4\ubd80\uc758 \uc9c8\ub7c9 \ubd84\ud3ec\uac00 \ubcc0\ud654(\uc6d0\ud658 \ud22c\ud558)\ud558\uc5ec \uac01\uc18d\ub3c4\uac00 \ubcc0\ud558\ub354\ub77c\ub3c4, \ucd1d \uac01\uc6b4\ub3d9\ub7c9\uc740 \uc77c\uc815\ud558\uac8c \ubcf4\uc874\ub41c\ub2e4\ub294 \uac83\uc744 \ud3c9\uade0 \uc624\ucc28\uc728 **1.34%** \uc758 \ub192\uc740 \uc2e0\ub8b0\ub3c4\ub85c \uc785\uc99d\ud558\uc600\ub2e4.<\/p>\n

3. \uc2e4\ud5d8 \ub370\uc774\ud130 \ucd08\uae30 \ubd84\uc11d \uacfc\uc815\uc5d0\uc11c \ud68c\uc804\ucd95\uc758 '\uc9c1\uacbd'\uc744 '\ubc18\uc9c0\ub984'\uc73c\ub85c \uc624\uc778\ud558\uc5ec \ub300\uc785\ud588\ub358 \uce58\uba85\uc801\uc778 \ud734\uba3c \uc5d0\ub7ec(\ucd08\uae30 \uc624\ucc28\uc728 80% \uc774\uc0c1)\ub97c \ubc1c\uacac\ud558\uace0 \uc218\uc815\ud558\ub294 \uacfc\uc815\uc744 \uac70\ucce4\ub2e4. \uc774\ub97c \ud1b5\ud574 \ub370\uc774\ud130 \uac80\uc99d\uc758 \uc911\uc694\uc131\uacfc \uacf5\uc2dd \ub0b4 \ubcc0\uc218(\ud2b9\ud788 \uc81c\uacf1\ud56d\uc778 $r$)\uc758 \ubbfc\uac10\ub3c4\ub97c \uae4a\uc774 \uccb4\ud5d8\ud560 \uc218 \uc788\uc5c8\ub2e4.<\/p>\n

## 6.5 Python \uc18c\uc2a4 \ucf54\ub4dc (\ub370\uc774\ud130 \uc2dc\uac01\ud654 \uc54c\uace0\ub9ac\uc998)<\/p>\n

\ubcf8 \ubcf4\uace0\uc11c\uc758 \ub370\uc774\ud130 \ubd84\uc11d\uc5d0 \uc0ac\uc6a9\ub41c Python \uc54c\uace0\ub9ac\uc998\uc758 \ud575\uc2ec \uc2dc\uac01\ud654 \ud568\uc218(Dual-axis \ucf64\ubcf4 \ucc28\ud2b8 \uc0dd\uc131)\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n

import csv\r\nimport matplotlib.pyplot as plt\r\nimport numpy as np\r\nimport os\r\n\r\nplt.rcParams['font.family'] = 'serif'\r\nplt.rcParams['font.serif'] = ['Times New Roman', 'DejaVu Serif']\r\nplt.rcParams['mathtext.fontset'] = 'stix' \r\nplt.rcParams['axes.labelsize'] = 12\r\nplt.rcParams['axes.titlesize'] = 14\r\nplt.rcParams['xtick.labelsize'] = 11\r\nplt.rcParams['ytick.labelsize'] = 11\r\nplt.rcParams['legend.fontsize'] = 10\r\n\r\ndef plot_combo_chart(x_labels, bar1, label1, bar2, label2, line_data, line_label, title, y_left, y_right, filename):\r\n    \"\"\"\r\n    Helper function to generate a dual-axis combination chart.\r\n    Bars: 6 decimal places (smaller font).\r\n    Line: 3 decimal places (slightly larger, bolder font).\r\n    \"\"\"\r\n    fig, ax1 = plt.subplots(figsize=(11, 6.5))\r\n    x = np.arange(len(x_labels))\r\n    width = 0.35\r\n\r\n    rects1 = ax1.bar(x - width\/2, bar1, width, label=label1, color='#4C72B0', alpha=0.85)\r\n    rects2 = ax1.bar(x + width\/2, bar2, width, label=label2, color='#DD8452', alpha=0.85)\r\n    \r\n    ax1.set_ylabel(y_left, fontweight='bold')\r\n    ax1.set_xticks(x)\r\n    ax1.set_xticklabels(x_labels)\r\n    \r\n    ax1.bar_label(rects1, fmt='%.6f', padding=4, fontsize=8, color='#1b2a49')\r\n    ax1.bar_label(rects2, fmt='%.6f', padding=4, fontsize=8, color='#5c2a11')\r\n    \r\n    max_bar_val = max(max(bar1), max(bar2))\r\n    if max_bar_val > 0:\r\n        ax1.set_ylim(0, max_bar_val * 1.25)\r\n    \r\n    ax2 = ax1.twinx()\r\n    line = ax2.plot(x, line_data, color='#C44E52', marker='D', linestyle='--', linewidth=2.5, markersize=8, label=line_label)\r\n    \r\n    ax2.set_ylabel(y_right, color='#C44E52', fontweight='bold')\r\n    ax2.tick_params(axis='y', labelcolor='#C44E52')\r\n    \r\n    for i, val in enumerate(line_data):\r\n        if not np.isnan(val):\r\n            ax2.annotate(f'{val:.3f}', \r\n                         (x[i], val), \r\n                         textcoords=\"offset points\", \r\n                         xytext=(0, 10), \r\n                         ha='center', \r\n                         fontsize=10.5, \r\n                         color='#C44E52', \r\n                         fontweight='bold')\r\n    \r\n    max_line_val = max([v for v in line_data if not np.isnan(v)] or [0])\r\n    if max_line_val > 0:\r\n        ax2.set_ylim(0, max_line_val * 1.35)<\/pre>\n
> \uc804\uccb4 \ub370\uc774\ud130 \ud30c\uc2f1 \ubc0f \uc804\ucc98\ub9ac \ub85c\uc9c1\uc774 \ud3ec\ud568\ub41c \uc804\uccb4 \uc18c\uc2a4 \ucf54\ub4dc\ub294 \ucca8\ubd80\ub41c `main.py` \ucc38\uc870.<\/p>\n
# 7. \uc2e4\ud5d8\uc2dc \uc8fc\uc758\uc0ac\ud56d<\/p>\n
\ubcf8 \uc2e4\ud5d8\uc740 \ud68c\uc804 \uc5ed\ud559\uacc4\uc758 \ubbf8\uc138\ud55c \ubcc0\ud654\ub97c \ub2e4\ub8e8\ubbc0\ub85c, \uae30\ud558\ud559\uc801 \uc624\ucc28\uc640 \ub9c8\ucc30\uc744 \ucd5c\uc18c\ud654\ud558\uae30 \uc704\ud574 \ub2e4\uc74c\uc758 \uc0ac\ud56d\ub4e4\uc744 \uc5c4\uaca9\ud788 \uc900\uc218\ud558\uc5ec \uc2e4\ud5d8\uc744 \uc9c4\ud589\ud574\uc57c \ud55c\ub2e4.<\/p>\n
## 7.1 \ud68c\uc804 \uc7a5\uce58\uc758 \uc218\ud3c9 \uc720\uc9c0 (Leveling)<\/p>\n
\ud68c\uc804 \uc2a4\ud0e0\ub4dc \ubca0\uc774\uc2a4\uc5d0 \ubd80\ucc29\ub41c \uc218\uc900\uae30(Leveler)\uc758 \uae30\ud3ec\uac00 \uc815\uc911\uc559\uc5d0 \uc624\ub3c4\ub85d \ub098\uc0ac\ub97c \uc870\uc808\ud558\uc5ec \uc7a5\uce58\uc758 \uc218\ud3c9\uc744 \uc644\ubcbd\ud558\uac8c \ub9de\ucdb0\uc57c \ud55c\ub2e4. \uc218\ud3c9\uc774 \ub9de\uc9c0 \uc54a\uc73c\uba74 \uc6d0\ud310\uc758 \ud68c\uc804\ucd95\uc774 \uae30\uc6b8\uc5b4\uc838 \uc911\ub825\uc758 \ubd84\ub825\uc774 \ud68c\uc804 \ubc29\ud5a5\uc73c\ub85c \uc791\uc6a9\ud558\uac8c \ub418\uba70, \uc774\ub294 \uc758\ub3c4\uce58 \uc54a\uc740 \ucd94\uac00\uc801\uc778 \uc54c\uc9dc \ud1a0\ud06c(Torque)\ub97c \ubc1c\uc0dd\uc2dc\ucf1c \uac01\uac00\uc18d\ub3c4 \uce21\uc815\uc5d0 \uc2ec\uac01\ud55c \uacc4\ud1b5 \uc624\ucc28\ub97c \uc720\ubc1c\ud55c\ub2e4.<\/p>\n
## 7.2 \uc2e4\uc758 \uacb9\uce68 \ubc29\uc9c0 \ubc0f \uc218\ud3c9 \uc815\ub82c (String Winding & Alignment)<\/p>\n
\ud68c\uc804\ucd95(3\ub2e8 \ub3c4\ub974\ub798)\uc5d0 \uc2e4\uc744 \uac10\uc744 \ub54c, \uc2e4\uc774 \uacb9\uce58\uc9c0 \uc54a\uace0 \ud55c \uc904\ub85c \ub098\ub780\ud788 \uac10\uae30\ub3c4\ub85d \ud574\uc57c \ud55c\ub2e4. \uc2e4\uc774 \uacb9\uccd0\uc11c \uac10\uae38 \uacbd\uc6b0 \ud68c\uc804\ucd95\uc758 \uc720\ud6a8 \ubc18\uc9c0\ub984($r$)\uc774 \uc2e4\uc758 \ub450\uaed8\ub9cc\ud07c \ubcc0\ud558\uac8c \ub41c\ub2e4. \uc2e4\ud5d8 \uacf5\uc2dd $I = mr^2 (\\frac{g}{r\\alpha} - 1)$\uc5d0\uc11c $r$\uc740 \uc81c\uacf1\uc73c\ub85c \ube44\ub840\ud558\ubbc0\ub85c \ubbf8\uc138\ud55c \ubc18\uc9c0\ub984 \ubcc0\ud654\ub3c4 \uad00\uc131\ubaa8\uba58\ud2b8 \ub3c4\ucd9c\uc5d0 \ud070 \uc624\ucc28\ub97c \ucd08\ub798\ud55c\ub2e4. \ub610\ud55c, \uc2e4\uc774 \uc2a4\ub9c8\ud2b8 \ub3c4\ub974\ub798(Smart Pulley)\ub85c \ub118\uc5b4\uac08 \ub54c \uc9c0\uba74\uacfc \uc644\ubcbd\ud55c \uc218\ud3c9\uc744 \uc774\ub8e8\ub3c4\ub85d \ub3c4\ub974\ub798\uc758 \ub192\uc774\ub97c \uc870\uc808\ud574\uc57c \uc7a5\ub825\uc774 \uc628\uc804\ud788 \ud68c\uc804\ucd95\uc758 \uc811\uc120 \ubc29\ud5a5 \ud1a0\ud06c\ub85c \uc791\uc6a9\ud55c\ub2e4.<\/p>\n
## 7.3 \uc6d0\ud658 \ud22c\ud558 \uc2dc \uc815\ud655\ud55c \uc911\uc2ec \uc77c\uce58 (Centering the Mass Ring)<\/p>\n
\uc2e4\ud5d8 B(\uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874)\uc5d0\uc11c \ud68c\uc804\ud558\ub294 \uc6d0\ud310 \uc704\uc5d0 \uc6d0\ud658\uc744 \ub5a8\uc5b4\ub728\ub9b4 \ub54c, \uc6d0\ud658\uc774 \uc6d0\ud310\uc758 \uc815\uc911\uc559 \uac00\uc774\ub4dc \ud648\uc5d0 \uc815\ud655\ud788 \ub9de\ubb3c\ub9ac\ub3c4\ub85d \ub099\ud558\uc2dc\ucf1c\uc57c \ud55c\ub2e4. \ub9cc\uc57d \uc911\uc2ec\uc5d0\uc11c $d$\ub9cc\ud07c \ube57\uaca8\ub098\uc11c \ub5a8\uc5b4\uc9c0\uac8c \ub418\uba74 \ud3c9\ud589\ucd95 \uc815\ub9ac($I = I_{cm} + Md^2$)\uc5d0 \uc758\ud574 \uc6d0\ud658\uc758 \uad00\uc131\ubaa8\uba58\ud2b8\uac00 \ube44\uc815\uc0c1\uc801\uc73c\ub85c \ucee4\uc9c0\uac8c \ub418\uc5b4, \ub098\uc911 \uac01\uc6b4\ub3d9\ub7c9 \uacc4\uc0b0 \uc2dc \ud070 \uc624\ucc28\uac00 \ubc1c\uc0dd\ud55c\ub2e4.<\/p>\n
## 7.4 \uc678\ubd80 \ud1a0\ud06c \uac1c\uc785 \ucd5c\uc18c\ud654 (Minimizing External Torque)<\/p>\n
\uc6d0\ud658\uc744 \ub5a8\uc5b4\ub728\ub9b4 \ub54c \uc190\uc73c\ub85c \ud68c\uc804 \ubc29\ud5a5\uc758 \ud798(\ucd08\uae30 \uac01\uc18d\ub3c4)\uc744 \uc8fc\uac70\ub098 \uc218\uc9c1\uc73c\ub85c \uac15\ud558\uac8c \uc9d3\ub204\ub974\uc9c0 \uc54a\ub3c4\ub85d \uc8fc\uc758\ud574\uc57c \ud55c\ub2e4. \uc624\uc9c1 \uc911\ub825\uc5d0 \uc758\ud574\uc11c\ub9cc \uc0b4\uc9dd \ub0b4\ub824\ub193\ub4ef\uc774 \ud22c\ud558(Drop)\ud574\uc57c \ud558\uba70, \ucda9\ub3cc \uc2dc \ubc1c\uc0dd\ud558\ub294 \ub9c8\ucc30 \uc774\uc678\uc758 \uc678\ubd80 \ud1a0\ud06c\uac00 \uacc4\uc5d0 \uac1c\uc785\ub418\uc9c0 \uc54a\ub3c4\ub85d \ud558\uc5ec\uc57c \uc21c\uc218\ud55c \uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874\uc744 \uad00\ucc30\ud560 \uc218 \uc788\ub2e4.<\/p>\n
## 7.5 \ucd94\uc758 \ub099\ud558 \uc548\uc804\uac70\ub9ac \ud655\ubcf4 (Safety of Hanging Mass)<\/p>\n
\uc2e4\ud5d8 A \uc9c4\ud589 \uc2dc, \ub099\ud558\ud558\ub294 \ucd94\uac00 \ubc14\ub2e5\uc774\ub098 \uc2a4\ub9c8\ud2b8\uac8c\uc774\ud2b8 \uc7a5\uce58\uc5d0 \ubd80\ub52a\ud788\uc9c0 \uc54a\ub3c4\ub85d \uc8fc\uc758\ud55c\ub2e4. \ucd94\uac00 \ubc14\ub2e5\uc5d0 \ucda9\ub3cc\ud558\ub294 \uc21c\uac04 \uc7a5\ub825($T$)\uc774 \uac11\uc790\uae30 0\uc774 \ub418\uac70\ub098 \ubc18\ub3d9\uc774 \uc0dd\uaca8 \ub370\uc774\ud130(\uac01\uac00\uc18d\ub3c4 \uc120\ud615 \uad6c\uac04)\uac00 \ud6fc\uc190\ub420 \uc218 \uc788\uc73c\ubbc0\ub85c, \ubc14\ub2e5\uc5d0 \ub2ff\uae30 \uc9c1\uc804\uae4c\uc9c0\ub9cc \ub370\uc774\ud130\ub97c \uc218\uc9d1\ud558\uace0 \uc190\uc774\ub098 \ucfe0\uc158\uc73c\ub85c \ucd94\ub97c \uc548\uc804\ud558\uac8c \ubc1b\uc544\ub0b4\uc57c \ud55c\ub2e4.<\/p>\n
# 8. \ucc38\uace0\ubb38\ud5cc<\/p>\n
[1] \uacbd\ud76c\ub300\ud559\uad50, \"E1-05 \uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874,\" APHY1002-11 \ubb3c\ub9ac\ud559\ubc0f\uc2e4\ud5d81 \uc2e4\ud5d8\uc790\ub8cc (PDF), n.d.
\n[2] \uacbd\ud76c\ub300\ud559\uad50, \"E1-05\\_\uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874,\" APHY1002-11 \ubb3c\ub9ac\ud559\ubc0f\uc2e4\ud5d81 \uc2e4\ud5d8\uc790\ub8cc (PDF), n.d.
\n[3] \uacbd\ud76c\ub300\ud559\uad50, \"EXP05_\uac01\uc6b4\ub3d9\ub7c9\ubcf4\uc874,\" APHY1002-11 \ubb3c\ub9ac\ud559\ubc0f\uc2e4\ud5d81 \uc2e4\ud5d8 \ub370\uc774\ud130 \uc2dc\ud2b8 (CSV), 2026.
\n[4] \uacbd\ud76c\ub300\ud559\uad50, \"\ubb3c\ub9ac\ud559 \uc2e4\ud5d8-OT-\uc774\uac74\ube48,\" APHY1002-11 \ubb3c\ub9ac\ud559\ubc0f\uc2e4\ud5d81 \uc624\ub9ac\uc5d4\ud14c\uc774\uc158 \uc790\ub8cc (PDF), n.d.
\n[5] \u6bdb\u9a8f\u5065, \u987e\u7261 (\ub9c8\uc624\uc954\uc820, \uad6c\ubb34), \u300e\u5927\u5b66\u7269\u7406\u5b66\uff08\u7b2c\u4e09\u7248\uff09\uff08\u4e0a\u518c\uff09\u300f (\ub300\ud559\ubb3c\ub9ac\ud559 \uc81c3\ud310 \uc0c1\uad8c), \u9ad8\u7b49\u6559\u80b2\u51fa\u7248\u793e (\uace0\ub4f1\uad50\uc721\ucd9c\ud310\uc0ac), 2020, ISBN: 9787040548822.<\/p>\n","protected":false},"excerpt":{"rendered":"
1.\uc2e4\ud5d8 \uc81c\ubaa9<\/p>\n
\uc774\ubc88 \uc2e4\ud5d8\uc758 \uc8fc\uc81c\ub294 **\uad00\uc131\ubaa8\uba58\ud2b8 \uce21\uc815\uacfc \uac01\uc6b4\ub3d9\ub7c9 \ubcf4\uc874** \uc774\ub2e4.<\/p>\n
2. \uc2e4\ud5d8 \ubaa9\uc801<\/p>\n
\ud68c\uc804\ud558\ub294 \uac15\uccb4(Rigid Body)\uc758 \uac01\uac00\uc18d\ub3c4(Angula","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-315","post","type-post","status-publish","format-standard","hentry","category-article-ko"],"_links":{"self":[{"href":"https:\/\/wuhanqing.cn\/wordpress\/wp-json\/wp\/v2\/posts\/315","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wuhanqing.cn\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wuhanqing.cn\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wuhanqing.cn\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wuhanqing.cn\/wordpress\/wp-json\/wp\/v2\/comments?post=315"}],"version-history":[{"count":14,"href":"https:\/\/wuhanqing.cn\/wordpress\/wp-json\/wp\/v2\/posts\/315\/revisions"}],"predecessor-version":[{"id":330,"href":"https:\/\/wuhanqing.cn\/wordpress\/wp-json\/wp\/v2\/posts\/315\/revisions\/330"}],"wp:attachment":[{"href":"https:\/\/wuhanqing.cn\/wordpress\/wp-json\/wp\/v2\/media?parent=315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wuhanqing.cn\/wordpress\/wp-json\/wp\/v2\/categories?post=315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wuhanqing.cn\/wordpress\/wp-json\/wp\/v2\/tags?post=315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}