Re: Friction

[palmer@sfu.ca (Leigh Palmer)]

David countered this:

> >       I don't know about your tires, but mine sure work a lot better
> > when they are rolling (static friction) than when they are sliding
> > (kinetic friction).

with this:

> This is because you do not demand the maximum forces from them.  If you were
> racing you would have them slipping constantly and if you need to stop in the
> minimum time and distance you will want some slippage.  Until you start tearing
> rubber off the tire you have not reached maximum force.

C'mon, David; you're talking about the real world. No one wants to teach
these students about the real world. They want to get them past the AP
test, out of their hair - and into mine!

Leigh