在水平地面上放一木板B,重力为G2=100N,再在木板上放一货箱A在水平地面上放一木板B,重力为 G2=100N,再在木板上放一货箱A,重力为G1=500N,设货箱与木板、木板与地面的动摩擦因数μ均为0.5,先用绳
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![在水平地面上放一木板B,重力为G2=100N,再在木板上放一货箱A在水平地面上放一木板B,重力为 G2=100N,再在木板上放一货箱A,重力为G1=500N,设货箱与木板、木板与地面的动摩擦因数μ均为0.5,先用绳](/uploads/image/z/917964-36-4.jpg?t=%E5%9C%A8%E6%B0%B4%E5%B9%B3%E5%9C%B0%E9%9D%A2%E4%B8%8A%E6%94%BE%E4%B8%80%E6%9C%A8%E6%9D%BFB%2C%E9%87%8D%E5%8A%9B%E4%B8%BAG2%3D100N%2C%E5%86%8D%E5%9C%A8%E6%9C%A8%E6%9D%BF%E4%B8%8A%E6%94%BE%E4%B8%80%E8%B4%A7%E7%AE%B1A%E5%9C%A8%E6%B0%B4%E5%B9%B3%E5%9C%B0%E9%9D%A2%E4%B8%8A%E6%94%BE%E4%B8%80%E6%9C%A8%E6%9D%BFB%2C%E9%87%8D%E5%8A%9B%E4%B8%BA+G2%3D100N%2C%E5%86%8D%E5%9C%A8%E6%9C%A8%E6%9D%BF%E4%B8%8A%E6%94%BE%E4%B8%80%E8%B4%A7%E7%AE%B1A%2C%E9%87%8D%E5%8A%9B%E4%B8%BAG1%3D500N%2C%E8%AE%BE%E8%B4%A7%E7%AE%B1%E4%B8%8E%E6%9C%A8%E6%9D%BF%E3%80%81%E6%9C%A8%E6%9D%BF%E4%B8%8E%E5%9C%B0%E9%9D%A2%E7%9A%84%E5%8A%A8%E6%91%A9%E6%93%A6%E5%9B%A0%E6%95%B0%CE%BC%E5%9D%87%E4%B8%BA0.5%2C%E5%85%88%E7%94%A8%E7%BB%B3)
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