如图所示,物体所受重力为20N,用力F将滑轮匀速提起,不计滑轮的重力,当重物上升1M时,力F和滑轮上升的高度为?AF=10N H=2MBF=20N,H=1MCF=40N H=2MDF=40N H=0.5M
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![如图所示,物体所受重力为20N,用力F将滑轮匀速提起,不计滑轮的重力,当重物上升1M时,力F和滑轮上升的高度为?AF=10N H=2MBF=20N,H=1MCF=40N H=2MDF=40N H=0.5M](/uploads/image/z/2392677-45-7.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E7%89%A9%E4%BD%93%E6%89%80%E5%8F%97%E9%87%8D%E5%8A%9B%E4%B8%BA20N%2C%E7%94%A8%E5%8A%9BF%E5%B0%86%E6%BB%91%E8%BD%AE%E5%8C%80%E9%80%9F%E6%8F%90%E8%B5%B7%2C%E4%B8%8D%E8%AE%A1%E6%BB%91%E8%BD%AE%E7%9A%84%E9%87%8D%E5%8A%9B%2C%E5%BD%93%E9%87%8D%E7%89%A9%E4%B8%8A%E5%8D%871M%E6%97%B6%2C%E5%8A%9BF%E5%92%8C%E6%BB%91%E8%BD%AE%E4%B8%8A%E5%8D%87%E7%9A%84%E9%AB%98%E5%BA%A6%E4%B8%BA%3FAF%3D10N+H%3D2MBF%3D20N%2CH%3D1MCF%3D40N+H%3D2MDF%3D40N+H%3D0.5M)
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