一道关于物理斜面摩擦力的题7.重量为G的物体放在倾角为θ的斜面上,如图所示,物体与斜面间的动摩擦因素为0.6,现用力拉物体在斜面上匀速上升,问:F与斜面的夹角α为多大时最省力?π/2 –arct
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![一道关于物理斜面摩擦力的题7.重量为G的物体放在倾角为θ的斜面上,如图所示,物体与斜面间的动摩擦因素为0.6,现用力拉物体在斜面上匀速上升,问:F与斜面的夹角α为多大时最省力?π/2 –arct](/uploads/image/z/9745091-35-1.jpg?t=%E4%B8%80%E9%81%93%E5%85%B3%E4%BA%8E%E7%89%A9%E7%90%86%E6%96%9C%E9%9D%A2%E6%91%A9%E6%93%A6%E5%8A%9B%E7%9A%84%E9%A2%987.%E9%87%8D%E9%87%8F%E4%B8%BAG%E7%9A%84%E7%89%A9%E4%BD%93%E6%94%BE%E5%9C%A8%E5%80%BE%E8%A7%92%E4%B8%BA%CE%B8%E7%9A%84%E6%96%9C%E9%9D%A2%E4%B8%8A%2C%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E7%89%A9%E4%BD%93%E4%B8%8E%E6%96%9C%E9%9D%A2%E9%97%B4%E7%9A%84%E5%8A%A8%E6%91%A9%E6%93%A6%E5%9B%A0%E7%B4%A0%E4%B8%BA0.6%2C%E7%8E%B0%E7%94%A8%E5%8A%9B%E6%8B%89%E7%89%A9%E4%BD%93%E5%9C%A8%E6%96%9C%E9%9D%A2%E4%B8%8A%E5%8C%80%E9%80%9F%E4%B8%8A%E5%8D%87%2C%E9%97%AE%EF%BC%9AF%E4%B8%8E%E6%96%9C%E9%9D%A2%E7%9A%84%E5%A4%B9%E8%A7%92%CE%B1%E4%B8%BA%E5%A4%9A%E5%A4%A7%E6%97%B6%E6%9C%80%E7%9C%81%E5%8A%9B%3F%CF%80%2F2+%E2%80%93arct)
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