- @3 B6 \8 s' O' ]+ _1 ]4 cvolocity = radius X owmega squared% E5 ^, M3 v! n) b
The greater the radius, the greater the voloctiy, then the less pressure 3 u$ M) q+ C5 ^5 w5 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。" L( K# [( ~. G7 B- _+ v+ U. ]