0 l/ P z- |) h; v! S3 {volocity = radius X owmega squared* T& D8 `3 ?& Y' |. l- Q! M( g
The greater the radius, the greater the voloctiy, then the less pressure 1 @% ~* U$ p# K, V' \ `3 J2 [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。& E- s- o1 R! M9 c