物体B重100N,它在水中匀速下沉时,通过滑轮组拉着重200N、边长0.1m的立方体A在水平面上匀速运动.用一个水平向左的里F1拉物体A,使物体B在水中匀速上升(B未露出水面).当物体B完全露出水面后
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![物体B重100N,它在水中匀速下沉时,通过滑轮组拉着重200N、边长0.1m的立方体A在水平面上匀速运动.用一个水平向左的里F1拉物体A,使物体B在水中匀速上升(B未露出水面).当物体B完全露出水面后](/uploads/image/z/12218281-25-1.jpg?t=%E7%89%A9%E4%BD%93B%E9%87%8D100N%2C%E5%AE%83%E5%9C%A8%E6%B0%B4%E4%B8%AD%E5%8C%80%E9%80%9F%E4%B8%8B%E6%B2%89%E6%97%B6%2C%E9%80%9A%E8%BF%87%E6%BB%91%E8%BD%AE%E7%BB%84%E6%8B%89%E7%9D%80%E9%87%8D200N%E3%80%81%E8%BE%B9%E9%95%BF0.1m%E7%9A%84%E7%AB%8B%E6%96%B9%E4%BD%93A%E5%9C%A8%E6%B0%B4%E5%B9%B3%E9%9D%A2%E4%B8%8A%E5%8C%80%E9%80%9F%E8%BF%90%E5%8A%A8.%E7%94%A8%E4%B8%80%E4%B8%AA%E6%B0%B4%E5%B9%B3%E5%90%91%E5%B7%A6%E7%9A%84%E9%87%8CF1%E6%8B%89%E7%89%A9%E4%BD%93A%2C%E4%BD%BF%E7%89%A9%E4%BD%93B%E5%9C%A8%E6%B0%B4%E4%B8%AD%E5%8C%80%E9%80%9F%E4%B8%8A%E5%8D%87%EF%BC%88B%E6%9C%AA%E9%9C%B2%E5%87%BA%E6%B0%B4%E9%9D%A2%EF%BC%89.%E5%BD%93%E7%89%A9%E4%BD%93B%E5%AE%8C%E5%85%A8%E9%9C%B2%E5%87%BA%E6%B0%B4%E9%9D%A2%E5%90%8E)
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