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April 18, 2014

Homework Help: Physics

Posted by Emma on Monday, March 12, 2012 at 4:20pm.

A 15 kg uniform disk of radius R = 0.25 m has a string wrapped around it, and a m = 3.3 kg weight is hanging on the string. The system of the weight and disk is released from rest.

When the 3.3 kg weight is moving with a speed of 2.1 m/s, what is the kinetic energy of the entire system?

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