如图所示质量为m的小球在竖直平面内的光�圆环轨道上做圆�运动.圆环半径为r小球经过圆环最高点时刚好不脱离圆环则其通过最高点时 A Template




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tomski如图所示质量为m的小球在竖直平面内的光�圆环轨道上做圆�运动.圆环半径为r小球经过圆环最高点时刚好不脱离圆环则其通过最高点时 a coloring