两根间距为L的足够长的金属直角导轨如图所示放置,他们各有一边在同一水平面内另一边垂直于水平面.质量为均为m的金属细杆ab、cd与导轨垂直接触形成闭合回路,杆与导轨之间的动摩擦因数
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![两根间距为L的足够长的金属直角导轨如图所示放置,他们各有一边在同一水平面内另一边垂直于水平面.质量为均为m的金属细杆ab、cd与导轨垂直接触形成闭合回路,杆与导轨之间的动摩擦因数](/uploads/image/z/12363181-61-1.jpg?t=%E4%B8%A4%E6%A0%B9%E9%97%B4%E8%B7%9D%E4%B8%BAL%E7%9A%84%E8%B6%B3%E5%A4%9F%E9%95%BF%E7%9A%84%E9%87%91%E5%B1%9E%E7%9B%B4%E8%A7%92%E5%AF%BC%E8%BD%A8%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%E6%94%BE%E7%BD%AE%2C%E4%BB%96%E4%BB%AC%E5%90%84%E6%9C%89%E4%B8%80%E8%BE%B9%E5%9C%A8%E5%90%8C%E4%B8%80%E6%B0%B4%E5%B9%B3%E9%9D%A2%E5%86%85%E5%8F%A6%E4%B8%80%E8%BE%B9%E5%9E%82%E7%9B%B4%E4%BA%8E%E6%B0%B4%E5%B9%B3%E9%9D%A2.%E8%B4%A8%E9%87%8F%E4%B8%BA%E5%9D%87%E4%B8%BAm%E7%9A%84%E9%87%91%E5%B1%9E%E7%BB%86%E6%9D%86ab%E3%80%81cd%E4%B8%8E%E5%AF%BC%E8%BD%A8%E5%9E%82%E7%9B%B4%E6%8E%A5%E8%A7%A6%E5%BD%A2%E6%88%90%E9%97%AD%E5%90%88%E5%9B%9E%E8%B7%AF%2C%E6%9D%86%E4%B8%8E%E5%AF%BC%E8%BD%A8%E4%B9%8B%E9%97%B4%E7%9A%84%E5%8A%A8%E6%91%A9%E6%93%A6%E5%9B%A0%E6%95%B0)
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