小U博学! # G! ^, v2 I; u9 z' z G9 f, G. O% z9 w
volocity = radius X owmega squared ( N4 z) b+ H$ Z' h+ q9 jThe greater the radius, the greater the voloctiy, then the less pressure ; W P6 ?$ B 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。5 d$ a+ | B c/ e