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volocity = radius X owmega squared ' _* ?- p+ {) ^The greater the radius, the greater the voloctiy, then the less pressure ; h6 k! I1 L3 h+ k. ]5 P, t. G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。7 S/ V6 P: U7 C