----- Original Message -----
From: Michel Jullian <[EMAIL PROTECTED]>
Date: Friday, July 20, 2007 8:38 pm
Subject: [Vo]:Re: centripetal force question
> Harry wrote:
>
> > While the brakes are applied the wheel is not turning about its
> own centre.
>
> 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?). As I said, and as Steven paraphrased and Horace finally
> opined:
> "...If it's initially non-rotating wrt the Earth, i.e. rotating
> once per day wrt the distant stars, it will keep its angular speed
> i.e. it will remain at rest wrt the Earth."
>
> IOW what you drew (wheel not rotating wrt the distant stars) is
> not what will happen when the brakes are released, on the contrary
> the wheel will keep rotating wrt the stars at the sa!
me rate a
But if the hand of God placed a non-rotating wheel (wrt to distant stars)
in the supporting frame, then it would behave as I drew it? ;-)
Harry
