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Re: friction



On Sat, 12 Feb 2000 16:37:24 -0800 Leigh Palmer <palmer@SFU.CA> writes:

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)

If this model is inapplicable, please tell us why it does not
apply in this case...
On behalf of myself and all your other fans....
...... Thanks again Leigh..



Herb Gottlieb asked....

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?