Question: When the play button is pressed, a CD accelerates uniformly from rest to 4 8 0 rev / minrev / min in 4 . 0

When the play button is pressed, a CD accelerates uniformly from rest to 480 rev/minrev/min in 4.0 revolutions. If the CD has a radius of 7.0 cmcm and a mass of 20 gg , what is the torque exerted on it?

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