Thread: Science Something amazing to tell you concerning physics and motion
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Old 06-04-2009, 04:04 PM   #10
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Quote:
Originally Posted by cdcox View Post
Actually, perfect rolling generates zero frictional force opposing the thrust of the jets.
The friction I am talking about is the friction between the wheels and the ground/treadmill. This is the coefficient of friction.

For dragging you want low. For rolling you want high.
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