# G+ _5 S( @ }- F2 V! Hvolocity = radius X owmega squared, n; `$ ]9 X5 Z( @" j6 E, z
The greater the radius, the greater the voloctiy, then the less pressure * Q0 a$ e+ ^) d# _7 M4 X
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。. ~/ @4 _- f* g: H