2 L1 t1 B% r7 ?( K3 ~0 F9 dvolocity = radius X owmega squared9 g1 B: p# _8 q1 m9 t# W' K' F
The greater the radius, the greater the voloctiy, then the less pressure 7 z6 U8 C8 M: p; {4 c9 T4 V
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。$ o; J* V, B7 ^