小U博学!% g2 T( }, F/ A1 I3 |4 Q
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volocity = radius X owmega squared , O* U4 `6 B1 B+ |& _; JThe greater the radius, the greater the voloctiy, then the less pressure 8 d9 u6 @$ C S; g5 w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。; V/ N. O8 l; P' \