如图6-1所示,光滑圆弧轨道的半径为R,圆弧底部中点为O,两个相同

如图6-1所示,光滑圆弧轨道的半径为R,圆弧底部中点为O,两个相同的小球分别在O正上方h处的A点和离O很近的轨道B点,现同时释放两球,使两球正好在O点相碰。问h应为多高?

答案

 


解析:

对B球振动周期

到达O点的时间为

显然,前面的解仅仅是当n=0时的其中一解而已。

  

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