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volocity = radius X owmega squared 1 Y) Z$ a1 [5 R, _4 N* s6 FThe greater the radius, the greater the voloctiy, then the less pressure 7 a" f) S& y" R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。, p H6 o6 P6 X% c# k6 X