Re: Why is it "static friction?"

[Brian Whatcott <betwys1@SBCGLOBAL.NET>]

At 08:29 PM 11/13/2003, Ludwik,  you wrote:
> /// place
> ourselves in a rotational frame of reference.
> In that frame the centrifugal "action" force is
> directed away from the center. And it is real.
> The car acts on the road with the centrifugal
> force m*v^2/r and the road acts on the car
> with a force equal in magnitude but opposite
> in direction. The larger the m*v^2/r becomes
> (up to a limit) the larger is the mu*m*g (to
> sustain the constrain imposed v and r).


You were earlier called on equating mv^2/r
and mu m g. The latter is an upper limit, so it
is an  inequality which you are using.


Brian Whatcott    Altus OK    Eureka!