两个小球a和b用轻质弹簧相连,在光�的水平直轨道上处于静止状态。在它们左边有一垂直轨道的固定档板p,右边有一小球c沿轨道以速度v0射�b球,如 Template




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tomski两个小球a和b用轻质弹簧相连,在光�的水平直轨道上处于静止状态。在它们左边有一垂直轨道的固定档板p,右边有一小球c沿轨道以速度v0射�b球,如 coloring