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3-2-3 inclined plane

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by

donghee lee

on 10 May 2013

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Transcript of 3-2-3 inclined plane

경사면 귀찮긴 하지만 경사면이 길수록
힘은 적게든다. 경사면은 힘은 적게들지만
자전거로 올라가기에는 너무 힘들다.... Do you have any good idea? p. 118 ~ 121 경사면방향 : 일= F x s 대각선방향 W(무게=중력=수직방향) 수직방향 : 일=F x h 수직방향 (대각선방향) =wh 대각선방향 수직방향 수직방향 F s 수직방향 : 일 = 힘 x 거리 = F x s 수직방향 수직방향 = 500N x 1m = 500Nm = 500 J 나사를 많이 돌려야될수록 대각선방향의 거리가 커져 줘야하는 힘은 작아져 쉽게 일할 수 있어 <단위 정리> 힘 : N(뉴턴) 거리 : m(미터) 일=에너지 : J 일률 : W = Nm : 힘x거리=일이므로 = J/s : 일/시간 = 일률이므로 시간 : s(세컨) "초" (줄) (뉴턴미터) (와트) (줄퍼세컨)
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