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Re: friction



Suppose that your car is stuck on ice. thje wheels spin but the car does
not move. Your friend suggests that you let some air out of your tires to
increase the amount of friction.

Does this make sense?

Makes sense to me.

I suppose you are worried about some textbook statement that the
force of friction is independent on the area of mutual contact. This
provides a good chance to point out that the model of friction given
is just that, a model, and in this case an iapplicable model.

Leigh (from Deer Lake, which rarely freezes deep enough to drive on)