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What Is The Coefficient Of Rolling Friction

Sandra Watson
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QUESTION: Two bicycle tires are set rolling with the same initial speed of 3.80 m/s along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 psi and goes 18.6m ; the other is at 105 psi and goes 92.6m . Assume that the net horizontal force is due to rolling friction only.
What is the coefficient of rolling friction (Uk) for the tire under low pressure?

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