小U博学!. G; a7 l$ [8 S& _) o
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volocity = radius X owmega squared4 U! F* H- \# I6 i" l
The greater the radius, the greater the voloctiy, then the less pressure & T: o' T; g4 v2 O1 N8 y. l. E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。! N! P# d2 ]' F7 K' y+ K. D, E9 Y