小U博学!3 `) K1 Z0 Q! K; z6 q% V- U I
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volocity = radius X owmega squared: F% t0 H" @% L8 A( x' \
The greater the radius, the greater the voloctiy, then the less pressure " k" x9 E. R( d, q+ t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。& i4 X3 J: h0 I% }