; k. ~5 s S/ S# X. `volocity = radius X owmega squared 9 i' l) W. [4 G5 H. K1 QThe greater the radius, the greater the voloctiy, then the less pressure 4 p I" c8 p( i; n n' F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。& K' J7 V/ O, d1 A9 O/ X1 C