光滑的长轨道形状如图甲所示,其底部为半圆形,半径为R,固定在竖直平面内,A、B为两质量相同的小环用长为R的轻杆连接在一起,套在轨道上,将A、B两环从图示位置静止释放,A环与底部相距2R.不
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![光滑的长轨道形状如图甲所示,其底部为半圆形,半径为R,固定在竖直平面内,A、B为两质量相同的小环用长为R的轻杆连接在一起,套在轨道上,将A、B两环从图示位置静止释放,A环与底部相距2R.不](/uploads/image/z/12363984-0-4.jpg?t=%E5%85%89%E6%BB%91%E7%9A%84%E9%95%BF%E8%BD%A8%E9%81%93%E5%BD%A2%E7%8A%B6%E5%A6%82%E5%9B%BE%E7%94%B2%E6%89%80%E7%A4%BA%2C%E5%85%B6%E5%BA%95%E9%83%A8%E4%B8%BA%E5%8D%8A%E5%9C%86%E5%BD%A2%2C%E5%8D%8A%E5%BE%84%E4%B8%BAR%2C%E5%9B%BA%E5%AE%9A%E5%9C%A8%E7%AB%96%E7%9B%B4%E5%B9%B3%E9%9D%A2%E5%86%85%2CA%E3%80%81B%E4%B8%BA%E4%B8%A4%E8%B4%A8%E9%87%8F%E7%9B%B8%E5%90%8C%E7%9A%84%E5%B0%8F%E7%8E%AF%E7%94%A8%E9%95%BF%E4%B8%BAR%E7%9A%84%E8%BD%BB%E6%9D%86%E8%BF%9E%E6%8E%A5%E5%9C%A8%E4%B8%80%E8%B5%B7%2C%E5%A5%97%E5%9C%A8%E8%BD%A8%E9%81%93%E4%B8%8A%2C%E5%B0%86A%E3%80%81B%E4%B8%A4%E7%8E%AF%E4%BB%8E%E5%9B%BE%E7%A4%BA%E4%BD%8D%E7%BD%AE%E9%9D%99%E6%AD%A2%E9%87%8A%E6%94%BE%2CA%E7%8E%AF%E4%B8%8E%E5%BA%95%E9%83%A8%E7%9B%B8%E8%B7%9D2R.%E4%B8%8D)
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