物理怎么求物体做功的机械效率一木块在大小为10N的水平拉力下,10s内沿水平地面前进5m,则拉力做的功为()J,效率为()W,若木块重30N,在此过程中重力对木块做的功为()J求给出每个填空运用
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![物理怎么求物体做功的机械效率一木块在大小为10N的水平拉力下,10s内沿水平地面前进5m,则拉力做的功为()J,效率为()W,若木块重30N,在此过程中重力对木块做的功为()J求给出每个填空运用](/uploads/image/z/8365823-71-3.jpg?t=%E7%89%A9%E7%90%86%E6%80%8E%E4%B9%88%E6%B1%82%E7%89%A9%E4%BD%93%E5%81%9A%E5%8A%9F%E7%9A%84%E6%9C%BA%E6%A2%B0%E6%95%88%E7%8E%87%E4%B8%80%E6%9C%A8%E5%9D%97%E5%9C%A8%E5%A4%A7%E5%B0%8F%E4%B8%BA10N%E7%9A%84%E6%B0%B4%E5%B9%B3%E6%8B%89%E5%8A%9B%E4%B8%8B%2C10s%E5%86%85%E6%B2%BF%E6%B0%B4%E5%B9%B3%E5%9C%B0%E9%9D%A2%E5%89%8D%E8%BF%9B5m%2C%E5%88%99%E6%8B%89%E5%8A%9B%E5%81%9A%E7%9A%84%E5%8A%9F%E4%B8%BA%EF%BC%88%EF%BC%89J%2C%E6%95%88%E7%8E%87%E4%B8%BA%28%29W%2C%E8%8B%A5%E6%9C%A8%E5%9D%97%E9%87%8D30N%2C%E5%9C%A8%E6%AD%A4%E8%BF%87%E7%A8%8B%E4%B8%AD%E9%87%8D%E5%8A%9B%E5%AF%B9%E6%9C%A8%E5%9D%97%E5%81%9A%E7%9A%84%E5%8A%9F%E4%B8%BA%EF%BC%88%EF%BC%89J%E6%B1%82%E7%BB%99%E5%87%BA%E6%AF%8F%E4%B8%AA%E5%A1%AB%E7%A9%BA%E8%BF%90%E7%94%A8)
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