Physics help - Torque?

jessie c

New member
I'm having problems figuring this problem out. Any help would be great!

When the play button is pressed, a CD accelerates uniformly from rest to 475 rev/min in 3.3 revolutions. If the CD has a radius of 6cm and a mass of 17g, what is the torque exerted on it?
The answer should be in N x m.

Thank you for helping to explain this to me.
 
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