no
let circumference of big circle be a, circumference of small be b
then a>b
大圓轉動1 degree 的距離= a/360
小圓轉動1 degree 的距離= b/360
2圓同樣轉動1 degree 但距離根本不同
相反來說 see the 2 circles of the coin as 2 tracks
2 runners start at the intersections of the same radius
but arrive at the finishing point at the same time
it's because their speeds are different
可以算是速率問題吧
2007-06-09 23:32:03 補充:
also the distances are not the same!!