1 e5 }. T1 V4 l- c! Lvolocity = radius X owmega squared0 {: Q3 F1 m# ^2 D( G
The greater the radius, the greater the voloctiy, then the less pressure ! H5 D* G; d2 @ K8 k& 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。5 j, o' D ]% B; D. s* p+ m