Posted by **John** on Sunday, December 4, 2011 at 2:58pm.

A turntable with a moment of inertia of 0.017 kg*m^2 rotates feely at 3.3 rad/s. A circular disk of mass 240 g and diameter 26 cm, and initially not rotating, slips down a spindle and lands on the turntable.

a) Find the new angular speed.

b) what is the change in kinetic energy?

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