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Posted by on Tuesday, October 26, 2010 at 6:26pm.

A disk with a mass of 1300 g and radius 0.7 m has a block of mass 170 g hanging from it, as shown. The wheel and block start at rest. The moment that the block is released, what is the magnitude of the angular acceleration of the disk? (Note: the moment of inertia of a disk about its axis is 0.5MR2.)

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