If I double the mass of my Bob at the end of a pendulum, then the vertical component of the tension will also double.
如果把钟摆末端，物体重量加倍，那么张力的垂直分力，也会加倍。
In a cunning economy, Mr Sauter USES the battery pack itself as the Bob of the pendulum.
出于经济眼光，索特使用电池组本身充当钟摆的浮子。
In a cunning economy, Mr Sauter USES the battery pack itself as the Bob of the pendulum.
出于经济眼光，索特使用电池组本身充当钟摆的浮子。
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