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July 29, 2014

Homework Help: Physics

Posted by Brittany on Sunday, February 12, 2012 at 12:08pm.

A turntable of radius 2m rotates freely about a fixed vertical axis. A child 19 kg is standing on the turntable right at the outer edge and the system is initially rotating at an angular speed of 0.5 rev/s. The child then moves to position 1m from center of the turntable. what does the urntable angular speed become? The moment of inertia is 400kgm^2.

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