小U博学!* u) x! F4 c4 p& A
6 w2 ^+ }4 q, n# r3 q/ Y- Z2 M
volocity = radius X owmega squared2 G; S& p" \. N6 T0 w$ H& D4 P) Z- h
The greater the radius, the greater the voloctiy, then the less pressure 8 X# c/ h5 h* `, g8 T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。: N3 `6 A& C- K8 L0 d