@3 T, J7 h t h+ m" j7 j8 h/ Ovolocity = radius X owmega squared! n: D9 U; ~5 E5 H
The greater the radius, the greater the voloctiy, then the less pressure # {# L5 ?9 ~7 t; l2 ~
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。( v% a9 u* }$ M6 ^3 _