% J6 G( W; p/ T# Rvolocity = radius X owmega squared9 Y3 F: W! M' o H9 ]% c& }& Y
The greater the radius, the greater the voloctiy, then the less pressure # U' P: Y! v! @) M6 j- @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。 1 p# H2 d0 G4 E4 m) z