Monday
December 22, 2014

Homework Help: Physics

Posted by Alex on Thursday, January 3, 2013 at 7:28pm.

A coin is placed on an old record turntable which rotates at 78 rpm. The coefficient of friction between the record and the coin is 0.17.

a) What is the angular speed of record in radians/s?
b) At what distance (m) from the center will the coin begin to slide off the record?
c) What is the period of the rotation (s) of the penny?

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