小U博学! * S# O# I- [- ^( i0 d( I ! J- J- M8 ~/ g! t+ A3 evolocity = radius X owmega squared0 c' p: b8 |! s# l; v8 z
The greater the radius, the greater the voloctiy, then the less pressure / N7 L% P W6 b9 N( {! V
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 t7 l, f' @- \7 L& s* w0 q( q" R- @; y