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Old 08-01-11 | 09:53 PM
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urbanknight
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Originally Posted by wens
Amazing! You've discovered a frictionless material, surely perpetual motion is to follow, since the coefficient of kinetic friction of rubber on asphalt or concrete is 0!

Or do you mean that you can't turn without a rotating wheel, and that a sliding tire has less friction?
Although traction and friction have something to do with each other, they are not the same. And of course, "no traction" was a phrase and not an exact measurement. Anyone who doesn't realize this is... well... probably an engineer
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