小U博学! , u! Z% x0 d% t1 Q" N6 x1 | p1 P/ l7 i7 J$ Z
volocity = radius X owmega squared* c _/ ^2 a+ m5 K% f( P
The greater the radius, the greater the voloctiy, then the less pressure # T- W# m5 G9 i: `3 V% ]
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。& S1 `6 i5 `* S8 i4 R