如图所示,在磁感应强度为B的水平匀强磁场中,有一足够长的绝缘细棒OO′在竖直面内垂直于磁场方向放置,细棒与水平面夹角为α.一质量为m、带电荷量为+q的圆环A套在OO′棒上,圆环与棒间的
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![如图所示,在磁感应强度为B的水平匀强磁场中,有一足够长的绝缘细棒OO′在竖直面内垂直于磁场方向放置,细棒与水平面夹角为α.一质量为m、带电荷量为+q的圆环A套在OO′棒上,圆环与棒间的](/uploads/image/z/4479972-60-2.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%9C%A8%E7%A3%81%E6%84%9F%E5%BA%94%E5%BC%BA%E5%BA%A6%E4%B8%BAB%E7%9A%84%E6%B0%B4%E5%B9%B3%E5%8C%80%E5%BC%BA%E7%A3%81%E5%9C%BA%E4%B8%AD%2C%E6%9C%89%E4%B8%80%E8%B6%B3%E5%A4%9F%E9%95%BF%E7%9A%84%E7%BB%9D%E7%BC%98%E7%BB%86%E6%A3%92OO%E2%80%B2%E5%9C%A8%E7%AB%96%E7%9B%B4%E9%9D%A2%E5%86%85%E5%9E%82%E7%9B%B4%E4%BA%8E%E7%A3%81%E5%9C%BA%E6%96%B9%E5%90%91%E6%94%BE%E7%BD%AE%2C%E7%BB%86%E6%A3%92%E4%B8%8E%E6%B0%B4%E5%B9%B3%E9%9D%A2%E5%A4%B9%E8%A7%92%E4%B8%BA%CE%B1.%E4%B8%80%E8%B4%A8%E9%87%8F%E4%B8%BAm%E3%80%81%E5%B8%A6%E7%94%B5%E8%8D%B7%E9%87%8F%E4%B8%BA%EF%BC%8Bq%E7%9A%84%E5%9C%86%E7%8E%AFA%E5%A5%97%E5%9C%A8OO%E2%80%B2%E6%A3%92%E4%B8%8A%2C%E5%9C%86%E7%8E%AF%E4%B8%8E%E6%A3%92%E9%97%B4%E7%9A%84)
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