A wind-up toy train is allowed to ride on a circular track that is centered abou

Question

A wind-up toy train is allowed to ride on a circular track that is centered about a vertical axis and is free to rotate without friction.. The train and track are initially at rest in the lab frame of reference. The train is started while the track is held still. Once the train gets up to speed, the track is released. What will be the motion of the track when the trains runs down and comes to rest with respect to the track?

A. It will remain stationary

B. It will rotate in the direction that the train was moving.

C. It will rotate in the directino opposite to the motion of the trian.

D. It will oscillate back and forth.

Explanation / Answer

B. It will rotate in the direction that the train was moving.

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