滑轮组机械效率η=W有用/W总=Gh/Fs=G/Fn=G/Fn=G/(G+G动滑轮)=G/G总∵F=1/n·G总G为物重,h为物体上升的高度,F为拉力大小,s为绳子上升的高度,n是绳子绕数(与动滑轮相连的).或:η=W有用/W总=Gh/G总h=Gh/(G
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 00:58:20
![滑轮组机械效率η=W有用/W总=Gh/Fs=G/Fn=G/Fn=G/(G+G动滑轮)=G/G总∵F=1/n·G总G为物重,h为物体上升的高度,F为拉力大小,s为绳子上升的高度,n是绳子绕数(与动滑轮相连的).或:η=W有用/W总=Gh/G总h=Gh/(G](/uploads/image/z/12123215-71-5.jpg?t=%E6%BB%91%E8%BD%AE%E7%BB%84%E6%9C%BA%E6%A2%B0%E6%95%88%E7%8E%87%CE%B7%3DW%E6%9C%89%E7%94%A8%2FW%E6%80%BB%3DGh%2FFs%3DG%2FFn%3DG%2FFn%3DG%2F%28G%2BG%E5%8A%A8%E6%BB%91%E8%BD%AE%29%3DG%2FG%E6%80%BB%E2%88%B5F%3D1%2Fn%C2%B7G%E6%80%BBG%E4%B8%BA%E7%89%A9%E9%87%8D%2Ch%E4%B8%BA%E7%89%A9%E4%BD%93%E4%B8%8A%E5%8D%87%E7%9A%84%E9%AB%98%E5%BA%A6%2CF%E4%B8%BA%E6%8B%89%E5%8A%9B%E5%A4%A7%E5%B0%8F%2Cs%E4%B8%BA%E7%BB%B3%E5%AD%90%E4%B8%8A%E5%8D%87%E7%9A%84%E9%AB%98%E5%BA%A6%2Cn%E6%98%AF%E7%BB%B3%E5%AD%90%E7%BB%95%E6%95%B0%EF%BC%88%E4%B8%8E%E5%8A%A8%E6%BB%91%E8%BD%AE%E7%9B%B8%E8%BF%9E%E7%9A%84%EF%BC%89.%E6%88%96%EF%BC%9A%CE%B7%3DW%E6%9C%89%E7%94%A8%2FW%E6%80%BB%3DGh%2FG%E6%80%BBh%3DGh%2F%28G)
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