小U博学!2 ~" |6 I0 r+ u) E
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volocity = radius X owmega squared9 T+ C9 C( I# _9 p- w! w. o$ h
The greater the radius, the greater the voloctiy, then the less pressure ' q5 |5 P% z, L) x' o上面杯子的半径大,转速快,压力小。反之下面的半径小,转速慢,压力大。所以产生了一个升力,从而托住了杯子。% r9 p+ G" v$ x