小U博学! ' I+ A* g3 {9 @/ f8 U' ?0 d / w0 y: |- Y0 h# L5 dvolocity = radius X owmega squared, ^+ [2 z7 w- w- v! r
The greater the radius, the greater the voloctiy, then the less pressure ( ^/ H4 S2 f, Q, \: e. @+ M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。# J* I5 G x6 z; O8 d: t8 W4 U