小U博学! ' d$ m8 d4 a& J" S" K) A # t; ]# M) t5 evolocity = radius X owmega squared9 t( H# o9 a/ X7 t
The greater the radius, the greater the voloctiy, then the less pressure / H% |( o! Z: Y0 s. o! U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。& B( W. M% C4 E5 l$ \% v3 v