小U博学! " x. R% y# \/ i2 y. ]4 U+ X2 X) a4 Y& x. S* W- M2 S
volocity = radius X owmega squared+ f; Y& Y0 c& Q1 N* C z
The greater the radius, the greater the voloctiy, then the less pressure 0 @* e# p7 P0 k' c
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。! ^' D* ^5 d" F/ x4 P v5 c* ~ l