PHYSICS question (simple) Help ASAP? 10 points!!?

ive tried everything, i know its a simple question but sometimes i just cant get it...and this is one of those questions...please help...and show how you do it please Que- A coin rests on a rotating platform a distance of 12cm from the center of rotation. Coefficient of friction is 0.6, what is the maximum speed... show more ive tried everything, i know its a simple question but sometimes i just cant get it...and this is one of those questions...please help...and show how you do it please
Que- A coin rests on a rotating platform a distance of 12cm from the center of rotation. Coefficient of friction is 0.6, what is the maximum speed of rotation so that the coin will not slip (move) on the platform?

PLEASE HELP ME ASAP
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