小U博学!, R7 R8 S: v6 i# t
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volocity = radius X owmega squared3 h. X4 {4 [9 m1 @4 x. g$ g+ `
The greater the radius, the greater the voloctiy, then the less pressure 8 u- [0 j7 p J$ {; w" z( L- k& r
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。& o% K3 {3 g3 T D3 E1 x2 E