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volocity = radius X owmega squared 8 P( [+ E+ g# J+ n9 P, m2 sThe greater the radius, the greater the voloctiy, then the less pressure & i5 e6 h+ Y( |1 d; y' V8 v4 |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。0 b+ B" {; _) M9 Z