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A block of mass m= kg is hanging from a rope attached to a pulley. The pulley has a mass M= kg and a radius of R= m. The block is held fixed, then suddenly released.

What is the angular acceleration of the pulley?

How long after being released will the block be falling at a speed of v= m/s? (The moment of inertia of the pulley is I=1/2 MR2.)

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