0 I4 q( K& ?8 R dvolocity = radius X owmega squared8 N# x' ^, Q1 I ]. K* v' H
The greater the radius, the greater the voloctiy, then the less pressure 2 l( v1 \0 u$ W6 @/ J6 b
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。# f. S+ ~5 u" [: a$ @: o