{"id":2127,"date":"2026-08-31T08:04:53","date_gmt":"2026-08-31T08:04:53","guid":{"rendered":"https:\/\/wayhope.kro.kr\/?p=2127"},"modified":"2026-08-31T08:04:53","modified_gmt":"2026-08-31T08:04:53","slug":"%ea%b3%a0%ec%a0%84%ec%97%ad%ed%95%99-%ed%95%b5%ec%8b%ac-%ec%a0%95%eb%a6%ac","status":"publish","type":"post","link":"https:\/\/wayhope.kro.kr\/?p=2127","title":{"rendered":"\uace0\uc804\uc5ed\ud559 \ud575\uc2ec \uc815\ub9ac"},"content":{"rendered":"\n

\uace0\uc804\uc5ed\ud559(Classical Mechanics)\uc740 \ud798\uacfc \ubb3c\uccb4\uc758 \uc6b4\ub3d9 \uc0ac\uc774\uc758 \uad00\uacc4\ub97c \uc124\uba85\ud558\ub294 \ubb3c\ub9ac\ud559<\/strong>\uc774\ub2e4.<\/p>\n\n\n\n

\uc6b4\ub3d9\ud559\uc774 “\ubb3c\uccb4\uac00 \uc5b4\ub5bb\uac8c \uc6c0\uc9c1\uc774\ub294\uac00”\ub97c \ub2e4\ub8ec\ub2e4\uba74, \uace0\uc804\uc5ed\ud559\uc740 \uc65c \uadf8\ub807\uac8c \uc6c0\uc9c1\uc774\ub294\uac00<\/strong>\uae4c\uc9c0 \ub2e4\ub8ec\ub2e4.<\/p>\n\n\n\n

\ud575\uc2ec \uad6c\uc870\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n

\ud798 -> \uac00\uc18d\ub3c4 -> \uc18d\ub3c4 -> \uc704\uce58<\/code><\/p>\n\n\n\n

\uadf8\ub9ac\uace0 \ub2e4\ub978 \uad00\uc810\uc5d0\uc11c\ub294<\/p>\n\n\n\n

\ud798 -> \uc6b4\ub3d9\ub7c9 \ubcc0\ud654<\/code><\/p>\n\n\n\n

\ud798 -> \uc77c -> \uc5d0\ub108\uc9c0 \ubcc0\ud654<\/code><\/p>\n\n\n\n

\ub85c \uc5f0\uacb0\ub41c\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\ud798\uacfc \uc6b4\ub3d9<\/h2>\n\n\n\n

\ud798(Force)<\/strong>\uc740 \ubb3c\uccb4\uc758 \uc6b4\ub3d9 \uc0c1\ud0dc\ub97c \ubcc0\ud654\uc2dc\ud0a4\ub294 \uc0c1\ud638\uc791\uc6a9\uc774\ub2e4.<\/p>\n\n\n\n

\ud798\uc740 \ubca1\ud130\uc774\ubbc0\ub85c \ud06c\uae30\uc640 \ubc29\ud5a5\uc744 \uac00\uc9c4\ub2e4.<\/p>\n\n\n\n

\ub2e8\uc704\ub294 \ub274\ud134(N)\uc774\ub2e4.<\/p>\n\n\n\n

\uc5ec\ub7ec \ud798\uc774 \ub3d9\uc2dc\uc5d0 \uc791\uc6a9\ud558\uba74 \uac01\uac01\uc758 \ud798\uc744 \ubca1\ud130\ub85c \ud569\uc0b0\ud558\uc5ec \uc54c\uc9dc\ud798(Net Force)<\/strong>\uc744 \uad6c\ud55c\ub2e4.<\/p>\n\n\n\n

F_net = \u03a3F<\/code><\/p>\n\n\n\n

\uc54c\uc9dc\ud798\uc774 \ubb3c\uccb4\uc758 \uc6b4\ub3d9\uc744 \uacb0\uc815\ud55c\ub2e4.<\/p>\n\n\n\n

F_net -> \uac00\uc18d\ub3c4<\/code><\/p>\n\n\n\n

\uc608\ub97c \ub4e4\uc5b4 \uc624\ub978\ucabd\uc73c\ub85c 10 N<\/code>, \uc67c\ucabd\uc73c\ub85c 4 N<\/code>\uc758 \ud798\uc774 \uc791\uc6a9\ud558\uba74<\/p>\n\n\n\n

F_net = 10 - 4 = 6 N<\/code><\/p>\n\n\n\n

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

\uc9c8\ub7c9\uc774 2 kg<\/code>\uc774\ub77c\uba74<\/p>\n\n\n\n

a = F_net \/ m = 6 \/ 2 = 3 m\/s\u00b2<\/code><\/p>\n\n\n\n

\uac00 \ub41c\ub2e4.<\/p>\n\n\n\n

\ub530\ub77c\uc11c \ubb3c\ub9ac \uacc4\uc0b0\uc5d0\uc11c\ub294 \uac1c\ubcc4 \ud798\ubcf4\ub2e4 \uc54c\uc9dc\ud798\uc744 \uc5b4\ub5bb\uac8c \uad6c\uc131\ud558\ub294\uac00<\/strong>\uac00 \uc911\uc694\ud558\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\ub274\ud134\uc758 \uc6b4\ub3d9 \ubc95\uce59<\/h2>\n\n\n\n

\ub274\ud134\uc758 \uc6b4\ub3d9 \ubc95\uce59\uc740 \uace0\uc804\uc5ed\ud559\uc758 \ud575\uc2ec\uc774\ub2e4.<\/p>\n\n\n\n

\uc81c1\ubc95\uce59 \uad00\uc131\uc758 \ubc95\uce59<\/h3>\n\n\n\n

\uc54c\uc9dc\ud798\uc774 0\uc774\uba74 \ubb3c\uccb4\uc758 \uc6b4\ub3d9 \uc0c1\ud0dc\ub294 \ubcc0\ud558\uc9c0 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n

F_net = 0 -> a = 0<\/code><\/p>\n\n\n\n

\uc815\uc9c0\ud574 \uc788\ub358 \ubb3c\uccb4\ub294 \uacc4\uc18d \uc815\uc9c0\ud558\uace0, \uc6c0\uc9c1\uc774\ub358 \ubb3c\uccb4\ub294 \uac19\uc740 \uc18d\ub3c4\ub85c \uacc4\uc18d \uc6c0\uc9c1\uc778\ub2e4.<\/p>\n\n\n\n

\uc5ec\uae30\uc11c \uc911\uc694\ud55c \uac83\uc740 \ud798\uc774 \uc5c6\uc73c\uba74 \uc6c0\uc9c1\uc784\uc774 \uba48\ucd94\ub294 \uac83\uc774 \uc544\ub2c8\ub77c\ub294 \uac83<\/strong>\uc774\ub2e4.<\/p>\n\n\n\n

\uba48\ucd94\uac8c \ub9cc\ub4dc\ub294 \uac83\ub3c4 \ud798\uc774\ub2e4.<\/p>\n\n\n\n

\ub9c8\ucc30\uc774 \uc5c6\ub2e4\uba74 \uc6c0\uc9c1\uc774\ub358 \ubb3c\uccb4\ub294 \uacc4\uc18d \ub4f1\uc18d\ub3c4 \uc6b4\ub3d9\uc744 \ud55c\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uc81c2\ubc95\uce59 \uac00\uc18d\ub3c4\uc758 \ubc95\uce59<\/h3>\n\n\n\n

\ubb3c\uccb4\uc758 \uac00\uc18d\ub3c4\ub294 \uc54c\uc9dc\ud798\uc5d0 \ube44\ub840\ud558\uace0 \uc9c8\ub7c9\uc5d0 \ubc18\ube44\ub840\ud55c\ub2e4.<\/p>\n\n\n\n

F_net = ma<\/code><\/p>\n\n\n\n

\ub530\ub77c\uc11c<\/p>\n\n\n\n

a = F_net \/ m<\/code><\/p>\n\n\n\n

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

\uac19\uc740 \ud798\uc774\ub77c\uba74 \uc9c8\ub7c9\uc774 \ud074\uc218\ub85d \uac00\uc18d\ub3c4\uac00 \uc791\ub2e4.<\/p>\n\n\n\n

\uac19\uc740 \uc9c8\ub7c9\uc774\ub77c\uba74 \ud798\uc774 \ud074\uc218\ub85d \uac00\uc18d\ub3c4\uac00 \ud06c\ub2e4.<\/p>\n\n\n\n

\uc774 \uc2dd\uc740 \uac8c\uc784 \ubb3c\ub9ac\uc5d0\uc11c\ub3c4 \ud575\uc2ec\uc774\ub2e4.<\/p>\n\n\n\n

\ud798 + \uc9c8\ub7c9 -> \uac00\uc18d\ub3c4<\/code><\/p>\n\n\n\n

\uac00\uc18d\ub3c4 -> \uc18d\ub3c4<\/code><\/p>\n\n\n\n

\uc18d\ub3c4 -> \uc704\uce58<\/code><\/p>\n\n\n\n

\n\n\n\n

\uc81c3\ubc95\uce59 \uc791\uc6a9\uacfc \ubc18\uc791\uc6a9<\/h3>\n\n\n\n

\ub450 \ubb3c\uccb4\uac00 \uc11c\ub85c \ud798\uc744 \uc8fc\uace0\ubc1b\uc73c\uba74 \ud06c\uae30\uac00 \uac19\uace0 \ubc29\ud5a5\uc774 \ubc18\ub300\uc778 \ud798\uc774 \ubc1c\uc0dd\ud55c\ub2e4.<\/p>\n\n\n\n

F_AB = -F_BA<\/code><\/p>\n\n\n\n

\uc911\uc694\ud55c \uac83\uc740 \uc774 \ub450 \ud798\uc774 \uc11c\ub85c \ub2e4\ub978 \ubb3c\uccb4\uc5d0 \uc791\uc6a9\ud55c\ub2e4\ub294 \uac83<\/strong>\uc774\ub2e4.<\/p>\n\n\n\n

\uc608\ub97c \ub4e4\uc5b4 \uc0ac\ub78c\uc774 \ubcbd\uc744 \ubc00\uba74<\/p>\n\n\n\n

\uc0ac\ub78c -> \ubcbd\uc5d0 \ud798<\/code><\/p>\n\n\n\n

\ub3d9\uc2dc\uc5d0<\/p>\n\n\n\n

\ubcbd -> \uc0ac\ub78c\uc5d0\uac8c \ubc18\ub300 \ubc29\ud5a5\uc758 \ud798<\/code><\/p>\n\n\n\n

\uc774 \uc791\uc6a9\ud55c\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uc6b4\ub3d9\ub7c9\uacfc \ucda9\uaca9\ub7c9<\/h2>\n\n\n\n

\uc6b4\ub3d9\ub7c9(Momentum)<\/strong>\uc740 \ubb3c\uccb4\uc758 \uc6b4\ub3d9 \uc0c1\ud0dc\ub97c \ub098\ud0c0\ub0b4\ub294 \ubb3c\ub9ac\ub7c9\uc774\ub2e4.<\/p>\n\n\n\n

\uc6b4\ub3d9\ub7c9\uc740<\/p>\n\n\n\n

p = mv<\/code><\/p>\n\n\n\n

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

\uc6b4\ub3d9\ub7c9\uc740 \ubca1\ud130\uc774\ubbc0\ub85c \uc18d\ub3c4\uc640 \uac19\uc740 \ubc29\ud5a5\uc744 \uac00\uc9c4\ub2e4.<\/p>\n\n\n\n

\uc9c8\ub7c9\uc774 \ud06c\uac70\ub098 \uc18d\ub3c4\uac00 \ube60\ub97c\uc218\ub85d \uc6b4\ub3d9\ub7c9\uc774 \ucee4\uc9c4\ub2e4.<\/p>\n\n\n\n

\ucda9\uaca9\ub7c9<\/h3>\n\n\n\n

\ucda9\uaca9\ub7c9(Impulse)\uc740 \ud798\uc774 \uc77c\uc815 \uc2dc\uac04 \ub3d9\uc548 \uc791\uc6a9\ud558\uba74\uc11c \ub9cc\ub4e4\uc5b4\ub0b4\ub294 \uc6b4\ub3d9\ub7c9\uc758 \ubcc0\ud654\ub2e4.<\/p>\n\n\n\n

J = F\u0394t<\/code><\/p>\n\n\n\n

\uadf8\ub9ac\uace0<\/p>\n\n\n\n

J = \u0394p<\/code><\/p>\n\n\n\n

\uc774\ubbc0\ub85c<\/p>\n\n\n\n

F\u0394t = \u0394p<\/code><\/p>\n\n\n\n

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

\ub530\ub77c\uc11c<\/p>\n\n\n\n

\ud798 \u00d7 \uc2dc\uac04 -> \uc6b4\ub3d9\ub7c9 \ubcc0\ud654<\/code><\/p>\n\n\n\n

\ub85c \uc774\ud574\ud558\uba74 \ub41c\ub2e4.<\/p>\n\n\n\n

\ucda9\ub3cc\uc5d0\uc11c\ub294 \ub9e4\uc6b0 \uc911\uc694\ud55c \uad00\uacc4\ub2e4.<\/p>\n\n\n\n

\uac19\uc740 \uc6b4\ub3d9\ub7c9\uc744 \ubcc0\ud654\uc2dc\ud0a4\ub354\ub77c\ub3c4 \ucda9\ub3cc \uc2dc\uac04\uc744 \ub298\ub9ac\uba74 \ud544\uc694\ud55c \ud3c9\uade0 \ud798\uc744 \uc904\uc77c \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

F_avg = \u0394p \/ \u0394t<\/code><\/p>\n\n\n\n

\n\n\n\n

\uc6b4\ub3d9\ub7c9 \ubcf4\uc874<\/h2>\n\n\n\n

\uc678\ubd80\uc5d0\uc11c \uc54c\uc9dc\ud798\uc774 \uc791\uc6a9\ud558\uc9c0 \uc54a\ub294 \uace0\ub9bd\ub41c \uacc4\uc5d0\uc11c\ub294 \uc804\uccb4 \uc6b4\ub3d9\ub7c9\uc774 \ubcf4\uc874\ub41c\ub2e4.<\/p>\n\n\n\n

p_initial = p_final<\/code><\/p>\n\n\n\n

\ub450 \ubb3c\uccb4\uc758 \ucda9\ub3cc\uc774\ub77c\uba74<\/p>\n\n\n\n

m_1v_1 + m_2v_2 = m_1v'_1 + m_2v'_2<\/code><\/p>\n\n\n\n

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

\ucda9\ub3cc, \ud3ed\ubc1c, \ubc18\ub3d9 \ub4f1\uc758 \ubb38\uc81c\ub97c \ubd84\uc11d\ud560 \ub54c \ud575\uc2ec\uc801\uc778 \ubc95\uce59\uc774\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uc77c\uacfc \uc5d0\ub108\uc9c0<\/h2>\n\n\n\n

\uc77c(Work)<\/strong>\uc740 \ud798\uc774 \ubb3c\uccb4\ub97c \uc774\ub3d9\uc2dc\ud0a4\uba74\uc11c \uc5d0\ub108\uc9c0\ub97c \uc804\ub2ec\ud558\ub294 \uac83\uc774\ub2e4.<\/p>\n\n\n\n

\uc77c\uc740<\/p>\n\n\n\n

W = Fd cos\u03b8<\/code><\/p>\n\n\n\n

\ub85c \ud45c\ud604\ud55c\ub2e4.<\/p>\n\n\n\n

\uc5ec\uae30\uc11c \u03b8<\/code>\ub294 \ud798\uacfc \uc774\ub3d9 \ubc29\ud5a5 \uc0ac\uc774\uc758 \uac01\ub3c4\ub2e4.<\/p>\n\n\n\n

\ud798\uacfc \uc774\ub3d9 \ubc29\ud5a5\uc774 \uac19\uc73c\uba74<\/p>\n\n\n\n

\u03b8 = 0\u00b0<\/code><\/p>\n\n\n\n

\uc774\ubbc0\ub85c<\/p>\n\n\n\n

W = Fd<\/code><\/p>\n\n\n\n

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

\ud798\uacfc \uc774\ub3d9 \ubc29\ud5a5\uc774 \uc218\uc9c1\uc774\uba74<\/p>\n\n\n\n

\u03b8 = 90\u00b0<\/code><\/p>\n\n\n\n

\uc774\ubbc0\ub85c<\/p>\n\n\n\n

W = 0<\/code><\/p>\n\n\n\n

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

\ub530\ub77c\uc11c \ud798\uc774 \uc874\uc7ac\ud55c\ub2e4\uace0 \ubb34\uc870\uac74 \uc77c\uc774 \ubc1c\uc0dd\ud558\ub294 \uac83\uc740 \uc544\ub2c8\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uc6b4\ub3d9 \uc5d0\ub108\uc9c0<\/h2>\n\n\n\n

\uc6c0\uc9c1\uc774\ub294 \ubb3c\uccb4\uac00 \uac00\uc9c0\ub294 \uc5d0\ub108\uc9c0\ub97c \uc6b4\ub3d9 \uc5d0\ub108\uc9c0(Kinetic Energy)<\/strong>\ub77c\uace0 \ud55c\ub2e4.<\/p>\n\n\n\n

K = 1\/2mv\u00b2<\/code><\/p>\n\n\n\n

\uc18d\ub3c4\uac00 2\ubc30\uac00 \ub418\uba74 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0\ub294 4\ubc30\uac00 \ub41c\ub2e4.<\/p>\n\n\n\n

v -> 2v<\/code><\/p>\n\n\n\n

\uc774\uba74<\/p>\n\n\n\n

K -> 4K<\/code><\/p>\n\n\n\n

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

\uc9c8\ub7c9\uc5d0\ub3c4 \ube44\ub840\ud55c\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uc704\uce58 \uc5d0\ub108\uc9c0<\/h2>\n\n\n\n

\uc911\ub825\uc7a5 \uc548\uc5d0\uc11c \ub192\uc740 \uc704\uce58\uc5d0 \uc788\ub294 \ubb3c\uccb4\ub294 \uc704\uce58 \uc5d0\ub108\uc9c0\ub97c \uac00\uc9c4\ub2e4.<\/p>\n\n\n\n

\uc9c0\ud45c\uba74 \uadfc\ucc98\uc5d0\uc11c\ub294<\/p>\n\n\n\n

U = mgh<\/code><\/p>\n\n\n\n

\ub85c \ud45c\ud604\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

m -> \uc9c8\ub7c9<\/code><\/p>\n\n\n\n

g -> \uc911\ub825 \uac00\uc18d\ub3c4<\/code><\/p>\n\n\n\n

h -> \uae30\uc900\uc810\uc73c\ub85c\ubd80\ud130\uc758 \ub192\uc774<\/code><\/p>\n\n\n\n

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

\uc911\uc694\ud55c \uac83\uc740 \uc704\uce58 \uc5d0\ub108\uc9c0\uc758 \uae30\uc900\uc810\uc740 \uc784\uc758\ub85c \uc124\uc815\ud560 \uc218 \uc788\ub2e4\ub294 \uac83\uc774\ub2e4.<\/p>\n\n\n\n

\ubb3c\ub9ac\uc801\uc73c\ub85c \uc911\uc694\ud55c \uac83\uc740 \uc808\ub300\uc801\uc778 \uc704\uce58 \uc5d0\ub108\uc9c0 \uc790\uccb4\ubcf4\ub2e4 \uc5d0\ub108\uc9c0 \ucc28\uc774<\/strong>\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uc5ed\ud559\uc801 \uc5d0\ub108\uc9c0 \ubcf4\uc874<\/h2>\n\n\n\n

\uc6b4\ub3d9 \uc5d0\ub108\uc9c0\uc640 \uc704\uce58 \uc5d0\ub108\uc9c0\uc758 \ud569\uc744 \uc5ed\ud559\uc801 \uc5d0\ub108\uc9c0<\/strong>\ub77c\uace0 \ud55c\ub2e4.<\/p>\n\n\n\n

E = K + U<\/code><\/p>\n\n\n\n

\ub9c8\ucc30\uc774\ub098 \uacf5\uae30 \uc800\ud56d \uac19\uc740 \ube44\ubcf4\uc874\ub825\uc774 \uc5c6\ub2e4\uba74<\/p>\n\n\n\n

K + U = constant<\/code><\/p>\n\n\n\n

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

\uc608\ub97c \ub4e4\uc5b4 \ub192\uc740 \uacf3\uc5d0 \uc788\ub294 \ubb3c\uccb4\uac00 \ub5a8\uc5b4\uc9c0\uba74<\/p>\n\n\n\n

\uc704\uce58 \uc5d0\ub108\uc9c0 \uac10\uc18c -> \uc6b4\ub3d9 \uc5d0\ub108\uc9c0 \uc99d\uac00<\/code><\/p>\n\n\n\n

\uac00 \uc77c\uc5b4\ub09c\ub2e4.<\/p>\n\n\n\n

\uc989,<\/p>\n\n\n\n

U -> K<\/code><\/p>\n\n\n\n

\ud615\ud0dc\ub85c \uc5d0\ub108\uc9c0\uac00 \uc804\ud658\ub41c\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uc77c-\uc5d0\ub108\uc9c0 \uc815\ub9ac<\/h2>\n\n\n\n

\uc54c\uc9dc\ud798\uc774 \ubb3c\uccb4\uc5d0 \ud55c \uc77c\uc740 \uc6b4\ub3d9 \uc5d0\ub108\uc9c0\uc758 \ubcc0\ud654\uc640 \uac19\ub2e4.<\/p>\n\n\n\n

W_net = \u0394K<\/code><\/p>\n\n\n\n

\uc989,<\/p>\n\n\n\n

\uc77c -> \uc6b4\ub3d9 \uc5d0\ub108\uc9c0 \ubcc0\ud654<\/code><\/p>\n\n\n\n

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

\uc774 \uad00\uacc4\ub294 \ud798\uc744 \uc9c1\uc811 \uc2dc\uac04\uc5d0 \ub530\ub77c \uacc4\uc0b0\ud558\ub294 \uac83\ubcf4\ub2e4 \uc5d0\ub108\uc9c0 \uad00\uc810\uc5d0\uc11c \ubb38\uc81c\ub97c \ud574\uacb0\ud560 \ub54c \uc720\uc6a9\ud558\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uc911\ub825<\/h2>\n\n\n\n

\ubaa8\ub4e0 \uc9c8\ub7c9\uc744 \uac00\uc9c4 \ubb3c\uccb4 \uc0ac\uc774\uc5d0\ub294 \uc11c\ub85c \ub04c\uc5b4\ub2f9\uae30\ub294 \uc911\ub825\uc774 \uc791\uc6a9\ud55c\ub2e4.<\/p>\n\n\n\n

\ub274\ud134\uc758 \ub9cc\uc720\uc778\ub825 \ubc95\uce59\uc740<\/p>\n\n\n\n

F = G(m_1m_2 \/ r\u00b2)<\/code><\/p>\n\n\n\n

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

G -> \uc911\ub825 \uc0c1\uc218<\/code><\/p>\n\n\n\n

m_1, m_2 -> \ub450 \ubb3c\uccb4\uc758 \uc9c8\ub7c9<\/code><\/p>\n\n\n\n

r -> \ub450 \ubb3c\uccb4 \uc911\uc2ec \uc0ac\uc774\uc758 \uac70\ub9ac<\/code><\/p>\n\n\n\n

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

\uc911\uc694\ud55c \ud2b9\uc9d5\uc740<\/p>\n\n\n\n

\uc9c8\ub7c9 \uc99d\uac00 -> \uc911\ub825 \uc99d\uac00<\/code><\/p>\n\n\n\n

\uac70\ub9ac \uc99d\uac00 -> \uc911\ub825 \uac10\uc18c<\/code><\/p>\n\n\n\n

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

\ud2b9\ud788 \uac70\ub9ac\ub294 \uc81c\uacf1\uc5d0 \ubc18\ube44\ub840\ud55c\ub2e4.<\/p>\n\n\n\n

r -> 2r<\/code><\/p>\n\n\n\n

\uc774\uba74<\/p>\n\n\n\n

F -> F\/4<\/code><\/p>\n\n\n\n

\uac00 \ub41c\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uc911\ub825\uc7a5\uacfc \uc911\ub825 \uac00\uc18d\ub3c4<\/h2>\n\n\n\n

\uc9c0\uad6c \ud45c\uba74 \uadfc\ucc98\uc5d0\uc11c\ub294 \uc911\ub825 \uac00\uc18d\ub3c4\ub97c<\/p>\n\n\n\n

g \u2248 9.8 m\/s\u00b2<\/code><\/p>\n\n\n\n

\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

\uc9c8\ub7c9 m<\/code>\uc778 \ubb3c\uccb4\uac00 \ubc1b\ub294 \uc911\ub825\uc740<\/p>\n\n\n\n

F_g = mg<\/code><\/p>\n\n\n\n

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

\ub530\ub77c\uc11c \ub274\ud134\uc758 \uc81c2\ubc95\uce59<\/p>\n\n\n\n

F = ma<\/code><\/p>\n\n\n\n

\uc5d0 \uc801\uc6a9\ud558\uba74<\/p>\n\n\n\n

mg = ma<\/code><\/p>\n\n\n\n

a = g<\/code><\/p>\n\n\n\n

\uac00 \ub41c\ub2e4.<\/p>\n\n\n\n

\uc5ec\uae30\uc11c \uc9c8\ub7c9 m<\/code>\uc774 \uc18c\uac70\ub41c\ub2e4.<\/p>\n\n\n\n

\ub530\ub77c\uc11c \uacf5\uae30 \uc800\ud56d\uc744 \ubb34\uc2dc\ud558\uba74 \ubb3c\uccb4\uc758 \uc9c8\ub7c9\uacfc \uad00\uacc4\uc5c6\uc774 \uac19\uc740 \uc911\ub825 \uac00\uc18d\ub3c4\ub97c \ubc1b\ub294\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uada4\ub3c4 \uc6b4\ub3d9<\/h2>\n\n\n\n

\uada4\ub3c4 \uc6b4\ub3d9\uc740 \uc911\ub825\uc774 \ubb3c\uccb4\ub97c \uacc4\uc18d \ub04c\uc5b4\ub2f9\uae30\uba74\uc11c\ub3c4 \ubb3c\uccb4\uac00 \uacc4\uc18d \uc606\uc73c\ub85c \uc774\ub3d9\ud558\ub294 \uc6b4\ub3d9<\/strong>\uc774\ub2e4.<\/p>\n\n\n\n

\uc6d0\ud615 \uada4\ub3c4\ub97c \ub2e8\uc21c\ud654\ud558\uba74 \ubb3c\uccb4\ub294 \uacc4\uc18d \uc9c4\ud589 \ubc29\ud5a5\uc73c\ub85c \uc6c0\uc9c1\uc774\ub824 \ud558\uc9c0\ub9cc \uc911\ub825\uc774 \uc911\uc2ec \ubc29\ud5a5\uc73c\ub85c \ubb3c\uccb4\uc758 \uc6b4\ub3d9 \ubc29\ud5a5\uc744 \uacc4\uc18d \ubc14\uafbc\ub2e4.<\/p>\n\n\n\n

\uc811\uc120 \ubc29\ud5a5 \uc18d\ub3c4 -> \ubb3c\uccb4\uc758 \uc9c4\ud589<\/code><\/p>\n\n\n\n

\uc911\uc2ec \ubc29\ud5a5 \uc911\ub825 -> \ubc29\ud5a5 \ubcc0\ud654<\/code><\/p>\n\n\n\n

\uc774 \ub458\uc774 \uacb0\ud569\ub418\uc5b4 \uada4\ub3c4\uac00 \ub9cc\ub4e4\uc5b4\uc9c4\ub2e4.<\/p>\n\n\n\n

\uc6d0\uc6b4\ub3d9\uc5d0 \ud544\uc694\ud55c \uad6c\uc2ec\ub825\uc740<\/p>\n\n\n\n

F_c = mv\u00b2\/r<\/code><\/p>\n\n\n\n

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

\uc911\ub825\uc774 \uad6c\uc2ec\ub825 \uc5ed\ud560\uc744 \ud55c\ub2e4\uba74<\/p>\n\n\n\n

GMm\/r\u00b2 = mv\u00b2\/r<\/code><\/p>\n\n\n\n

\uc774\uace0 \uc9c8\ub7c9 m<\/code>\uc744 \uc18c\uac70\ud558\uba74<\/p>\n\n\n\n

v = sqrt(GM\/r)<\/code><\/p>\n\n\n\n

\uc744 \uc5bb\uc744 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

\uc989 \uc6d0\ud615 \uada4\ub3c4\uc5d0\uc11c\ub294 \uc911\uc2ec \ucc9c\uccb4\uc758 \uc9c8\ub7c9\uacfc \uada4\ub3c4 \ubc18\uc9c0\ub984\uc5d0 \ub530\ub77c \ud544\uc694\ud55c \uacf5\uc804 \uc18d\ub3c4\uac00 \uacb0\uc815\ub41c\ub2e4.<\/p>\n\n\n\n

r \uc99d\uac00 -> \uacf5\uc804 \uc18d\ub3c4 \uac10\uc18c<\/code><\/p>\n\n\n\n

\n\n\n\n

\ud0c8\ucd9c \uc18d\ub3c4<\/h2>\n\n\n\n

\ucc9c\uccb4\uc758 \uc911\ub825\uc5d0\uc11c \ubc97\uc5b4\ub098\uae30 \uc704\ud574 \ud544\uc694\ud55c \ucd5c\uc18c \ucd08\uae30 \uc18d\ub3c4\ub97c \ud0c8\ucd9c \uc18d\ub3c4<\/strong>\ub77c\uace0 \ud55c\ub2e4.<\/p>\n\n\n\n

v_escape = sqrt(2GM\/r)<\/code><\/p>\n\n\n\n

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

\uc9c0\uad6c \ud45c\uba74\uc5d0\uc11c\ub294 \uc57d<\/p>\n\n\n\n

11.2 km\/s<\/code><\/p>\n\n\n\n

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

\ud0c8\ucd9c \uc18d\ub3c4\ub294 \ub2e8\uc21c\ud788 “\uc911\ub825\uc744 \uc774\uaca8\ub0b4\ub294 \uc18d\ub3c4”\ub77c\uace0 \uc774\ud574\ud558\uae30\ubcf4\ub2e4 \ubb34\ud55c\ud788 \uba40\ub9ac \ub5a8\uc5b4\uc838\ub3c4 \uc18d\ub3c4\uac00 0 \uc774\uc0c1\uc774 \ub420 \uc218 \uc788\ub3c4\ub85d \ud544\uc694\ud55c \uc5d0\ub108\uc9c0 \uc870\uac74<\/strong>\uc73c\ub85c \uc774\ud574\ud558\ub294 \uac83\uc774 \uc815\ud655\ud558\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\uace0\uc804\uc5ed\ud559\uc758 \ud575\uc2ec \uc5f0\uacb0<\/h2>\n\n\n\n

\uace0\uc804\uc5ed\ud559\uc5d0\uc11c \uc11c\ub85c \ub2e4\ub978 \uac1c\ub150\ub4e4\uc740 \ub3c5\ub9bd\uc801\uc73c\ub85c \uc874\uc7ac\ud558\uc9c0 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n

\ud798 -> \uac00\uc18d\ub3c4 -> \uc18d\ub3c4 -> \uc704\uce58<\/code><\/p>\n\n\n\n

\ub274\ud134\uc758 \uc6b4\ub3d9 \ubc95\uce59\uc744 \uae30\uc900\uc73c\ub85c \ubcf4\uba74<\/p>\n\n\n\n

\ud798 -> \uc6b4\ub3d9 \ubcc0\ud654<\/code><\/p>\n\n\n\n

\uc6b4\ub3d9\ub7c9 \uad00\uc810\uc5d0\uc11c\ub294<\/p>\n\n\n\n

\ud798 -> \ucda9\uaca9\ub7c9 -> \uc6b4\ub3d9\ub7c9 \ubcc0\ud654<\/code><\/p>\n\n\n\n

\uc5d0\ub108\uc9c0 \uad00\uc810\uc5d0\uc11c\ub294<\/p>\n\n\n\n

\ud798 -> \uc77c -> \uc5d0\ub108\uc9c0 \ubcc0\ud654<\/code><\/p>\n\n\n\n

\uc911\ub825\uc5d0\uc11c\ub294<\/p>\n\n\n\n

\uc911\ub825 -> \uac00\uc18d\ub3c4 -> \uada4\ub3c4 \uc6b4\ub3d9<\/code><\/p>\n\n\n\n

\uc73c\ub85c \uc5f0\uacb0\ub41c\ub2e4.<\/p>\n\n\n\n

\n\n\n\n

\ud575\uc2ec \uc815\ub9ac<\/h2>\n\n\n\n

\uc54c\uc9dc\ud798 -> F_net = \u03a3F<\/code><\/p>\n\n\n\n

\ub274\ud134 \uc81c1\ubc95\uce59 -> F_net = 0 -> \ub4f1\uc18d\ub3c4 \uc6b4\ub3d9<\/code><\/p>\n\n\n\n

\ub274\ud134 \uc81c2\ubc95\uce59 -> F_net = ma<\/code><\/p>\n\n\n\n

\ub274\ud134 \uc81c3\ubc95\uce59 -> F_AB = -F_BA<\/code><\/p>\n\n\n\n

\uc6b4\ub3d9\ub7c9 -> p = mv<\/code><\/p>\n\n\n\n

\ucda9\uaca9\ub7c9 -> J = F\u0394t = \u0394p<\/code><\/p>\n\n\n\n

\uc6b4\ub3d9\ub7c9 \ubcf4\uc874 -> p_initial = p_final<\/code><\/p>\n\n\n\n

\uc77c -> W = Fd cos\u03b8<\/code><\/p>\n\n\n\n

\uc6b4\ub3d9 \uc5d0\ub108\uc9c0 -> K = 1\/2mv\u00b2<\/code><\/p>\n\n\n\n

\uc911\ub825 \uc704\uce58 \uc5d0\ub108\uc9c0 -> U = mgh<\/code><\/p>\n\n\n\n

\uc5ed\ud559\uc801 \uc5d0\ub108\uc9c0 -> E = K + U<\/code><\/p>\n\n\n\n

\uc77c-\uc5d0\ub108\uc9c0 \uc815\ub9ac -> W_net = \u0394K<\/code><\/p>\n\n\n\n

\ub9cc\uc720\uc778\ub825 -> F = Gm_1m_2\/r\u00b2<\/code><\/p>\n\n\n\n

\uc911\ub825 -> F_g = mg<\/code><\/p>\n\n\n\n

\uad6c\uc2ec\ub825 -> F_c = mv\u00b2\/r<\/code><\/p>\n\n\n\n

\uc6d0\ud615 \uada4\ub3c4 \uc18d\ub3c4 -> v = sqrt(GM\/r)<\/code><\/p>\n\n\n\n

\ud0c8\ucd9c \uc18d\ub3c4 -> v_escape = sqrt(2GM\/r)<\/code><\/p>\n\n\n\n

\uc804\uccb4 \uad6c\uc870\ub97c \ud558\ub098\ub85c \uc5f0\uacb0\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n

\ud798 -> \uac00\uc18d\ub3c4 -> \uc18d\ub3c4 -> \uc704\uce58<\/code><\/p>\n\n\n\n

\ud798 -> \ucda9\uaca9\ub7c9 -> \uc6b4\ub3d9\ub7c9 \ubcc0\ud654<\/code><\/p>\n\n\n\n

\ud798 -> \uc77c -> \uc6b4\ub3d9 \uc5d0\ub108\uc9c0 \ubcc0\ud654<\/code><\/p>\n\n\n\n

\uc911\ub825 -> \ud798 -> \uac00\uc18d\ub3c4 -> \uc6b4\ub3d9<\/code><\/p>\n\n\n\n

\uc911\ub825 + \uc811\uc120 \ubc29\ud5a5 \uc18d\ub3c4 -> \uada4\ub3c4 \uc6b4\ub3d9<\/code><\/p>\n\n\n\n

\uace0\uc804\uc5ed\ud559\uc758 \ud575\uc2ec\uc740 \uacb0\uad6d \ud798, \uc6b4\ub3d9\ub7c9, \uc5d0\ub108\uc9c0\ub77c\ub294 \uc11c\ub85c \ub2e4\ub978 \uad00\uc810\uc73c\ub85c \uac19\uc740 \ubb3c\ub9ac \ud604\uc0c1\uc744 \uc124\uba85\ud560 \uc218 \uc788\ub2e4\ub294 \uac83<\/strong>\uc774\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"

\uace0\uc804\uc5ed\ud559(Classical Mechanics)\uc740 \ud798\uacfc \ubb3c\uccb4\uc758 \uc6b4\ub3d9 \uc0ac\uc774\uc758 \uad00\uacc4\ub97c \uc124\uba85\ud558\ub294 \ubb3c\ub9ac\ud559\uc774\ub2e4. \uc6b4\ub3d9\ud559\uc774 “\ubb3c\uccb4\uac00 \uc5b4\ub5bb\uac8c \uc6c0\uc9c1\uc774\ub294\uac00”\ub97c \ub2e4\ub8ec\ub2e4\uba74, \uace0\uc804\uc5ed\ud559\uc740 \uc65c \uadf8\ub807\uac8c \uc6c0\uc9c1\uc774\ub294\uac00\uae4c\uc9c0 \ub2e4\ub8ec\ub2e4. \ud575\uc2ec \uad6c\uc870\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4. \ud798 -> \uac00\uc18d\ub3c4 -> \uc18d\ub3c4 -> \uc704\uce58 \uadf8\ub9ac\uace0 \ub2e4\ub978 \uad00\uc810\uc5d0\uc11c\ub294 \ud798 -> \uc6b4\ub3d9\ub7c9 \ubcc0\ud654 \ud798 -> \uc77c -> \uc5d0\ub108\uc9c0 \ubcc0\ud654 \ub85c \uc5f0\uacb0\ub41c\ub2e4. \ud798\uacfc \uc6b4\ub3d9 \ud798(Force)\uc740 \ubb3c\uccb4\uc758 \uc6b4\ub3d9 \uc0c1\ud0dc\ub97c \ubcc0\ud654\uc2dc\ud0a4\ub294 \uc0c1\ud638\uc791\uc6a9\uc774\ub2e4. \ud798\uc740 \ubca1\ud130\uc774\ubbc0\ub85c […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[],"class_list":["post-2127","post","type-post","status-publish","format-standard","hentry","category-physics"],"_links":{"self":[{"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/posts\/2127","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2127"}],"version-history":[{"count":1,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/posts\/2127\/revisions"}],"predecessor-version":[{"id":2128,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/posts\/2127\/revisions\/2128"}],"wp:attachment":[{"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}