小U博学! : \4 m# X: \4 `0 `8 g Z4 r8 @' `" I/ O2 I
volocity = radius X owmega squared5 m' H& e, s2 s
The greater the radius, the greater the voloctiy, then the less pressure 9 |) |8 b+ |8 e3 y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。' w3 b, ^& R8 h! f, t& W. \