小U博学! / c$ s" }8 z6 _/ c' q+ H3 p7 ^6 W& i( Q; S" y( i2 Y8 `+ s1 j
volocity = radius X owmega squared; A. P' ?, w0 A3 D F2 n
The greater the radius, the greater the voloctiy, then the less pressure % i/ }0 h% k. q; L- \
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。/ M; |, F. f. z4 k