What is the magnitude of the trains angularacceleration

Reference no: EM13563378

A toy train rolls around a horizontal 1.5-m-diameter track.The coefficient of rolling friction is 0.15.
What is the magnitude of the train's angularacceleration after it is released in rad/s2?
How long does it take the train to stop ifit's released with an angular speed of 39 rpm? Inseconds.
Express your answers using twosignificant figures.

Reference no: EM13563378

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