电势能与电势如图所示,在竖直向上的匀强电场中,一根不可伸长的绝缘细绳的一端系着一个带电小球,另一端固定于O点,小球在竖直平面内做匀速圆周运动,最高点为a,最低点为b,不计空气阻力,
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![电势能与电势如图所示,在竖直向上的匀强电场中,一根不可伸长的绝缘细绳的一端系着一个带电小球,另一端固定于O点,小球在竖直平面内做匀速圆周运动,最高点为a,最低点为b,不计空气阻力,](/uploads/image/z/8581157-53-7.jpg?t=%E7%94%B5%E5%8A%BF%E8%83%BD%E4%B8%8E%E7%94%B5%E5%8A%BF%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%9C%A8%E7%AB%96%E7%9B%B4%E5%90%91%E4%B8%8A%E7%9A%84%E5%8C%80%E5%BC%BA%E7%94%B5%E5%9C%BA%E4%B8%AD%2C%E4%B8%80%E6%A0%B9%E4%B8%8D%E5%8F%AF%E4%BC%B8%E9%95%BF%E7%9A%84%E7%BB%9D%E7%BC%98%E7%BB%86%E7%BB%B3%E7%9A%84%E4%B8%80%E7%AB%AF%E7%B3%BB%E7%9D%80%E4%B8%80%E4%B8%AA%E5%B8%A6%E7%94%B5%E5%B0%8F%E7%90%83%2C%E5%8F%A6%E4%B8%80%E7%AB%AF%E5%9B%BA%E5%AE%9A%E4%BA%8EO%E7%82%B9%2C%E5%B0%8F%E7%90%83%E5%9C%A8%E7%AB%96%E7%9B%B4%E5%B9%B3%E9%9D%A2%E5%86%85%E5%81%9A%E5%8C%80%E9%80%9F%E5%9C%86%E5%91%A8%E8%BF%90%E5%8A%A8%2C%E6%9C%80%E9%AB%98%E7%82%B9%E4%B8%BAa%2C%E6%9C%80%E4%BD%8E%E7%82%B9%E4%B8%BAb%2C%E4%B8%8D%E8%AE%A1%E7%A9%BA%E6%B0%94%E9%98%BB%E5%8A%9B%2C)
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