如图所示,某物体以初动能E从斜角37°的斜面底端的A点沿斜面上滑,物体与斜面间动摩擦因数μ=0.5,当物体滑到B点时动能为E1.滑到C点时动能为零,物体从C点下滑到AB的中点D时的动能又为E1,已知AB=
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![如图所示,某物体以初动能E从斜角37°的斜面底端的A点沿斜面上滑,物体与斜面间动摩擦因数μ=0.5,当物体滑到B点时动能为E1.滑到C点时动能为零,物体从C点下滑到AB的中点D时的动能又为E1,已知AB=](/uploads/image/z/10160252-44-2.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E6%9F%90%E7%89%A9%E4%BD%93%E4%BB%A5%E5%88%9D%E5%8A%A8%E8%83%BDE%E4%BB%8E%E6%96%9C%E8%A7%9237%C2%B0%E7%9A%84%E6%96%9C%E9%9D%A2%E5%BA%95%E7%AB%AF%E7%9A%84A%E7%82%B9%E6%B2%BF%E6%96%9C%E9%9D%A2%E4%B8%8A%E6%BB%91%2C%E7%89%A9%E4%BD%93%E4%B8%8E%E6%96%9C%E9%9D%A2%E9%97%B4%E5%8A%A8%E6%91%A9%E6%93%A6%E5%9B%A0%E6%95%B0%CE%BC%3D0.5%2C%E5%BD%93%E7%89%A9%E4%BD%93%E6%BB%91%E5%88%B0B%E7%82%B9%E6%97%B6%E5%8A%A8%E8%83%BD%E4%B8%BAE1.%E6%BB%91%E5%88%B0C%E7%82%B9%E6%97%B6%E5%8A%A8%E8%83%BD%E4%B8%BA%E9%9B%B6%2C%E7%89%A9%E4%BD%93%E4%BB%8EC%E7%82%B9%E4%B8%8B%E6%BB%91%E5%88%B0AB%E7%9A%84%E4%B8%AD%E7%82%B9D%E6%97%B6%E7%9A%84%E5%8A%A8%E8%83%BD%E5%8F%88%E4%B8%BAE1%2C%E5%B7%B2%E7%9F%A5AB%3D)
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