Something else leaves me wondering... >Harry wrote: > >> While the brakes are applied the wheel is not turning about >> its own centre.
Michel wrote: > Wrt the ground it isn't, but wrt the distant stars it is, at the > rate of one turn per day (it can't be non-rotating wrt both, > agreed?). If you began to ride the wheel nearest the ground after the brake is realeased the net centrifugal force you would feel should depend only on the rotation of the earth, since the wheel is not rotating wrt to the ground. However, wrt to the distant stars the wheel is rotating so you should feel a reduced centrifugal force. Apparently theory leads to a contradiction. Or is my reasoning faulty? Harry
