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August 29, 2014

Homework Help: physics

Posted by applebottom on Saturday, December 11, 2010 at 6:10pm.

A turntable with a moment of inertia of 0.014 kg*m2 rotates feely at 2.7 rad/s. A circular disk of mass 500 g and diameter 22 cm, and initially not rotating, slips down a spindle and lands on the turntable.

a) Find the new angular speed.
rad/s

b) what is the change in kinetic energy?
J

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