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December 19, 2014

Homework Help: physics

Posted by jr on Thursday, February 24, 2011 at 10:00am.

A uniform spherical shell of mass M = 8.00 kg and radius R = 0.550 m can rotate about a vertical axis on frictionless bearings. A massless cord passes around the equator of the shell, over a pulley of rotational inertia I = 0.130 kgm2 and radius r = 0.140 m, and is attached to a small object of mass m = 2.00 kg. There is no friction on the pulley's axle; the cord does not slip on the pulley. What is the speed of the object when it has fallen a distance 1.27 m after being released from rest? Use energy considerations.

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