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Question: A toy train rolls around a horizontal 2.0-m -diameter track. The coefficient of rolling friction is 0.13.

A. What is the magnitude of the train's angular acceleration after it is released? Express your answer using two significant figures.

B. How long does it take the train to stop if it's released with an angular speed of 31 rpm? Express your answer using two significant figures.

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  • Category:- Physics
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