小U博学!* g+ e" D. R5 e+ a6 A e W
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volocity = radius X owmega squared , N2 _0 G U1 n$ z& KThe greater the radius, the greater the voloctiy, then the less pressure ) [7 h( }! \8 o! B! h0 N
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。 2 u0 A; v# I6 V% I- d8 J" V8 C