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6) A disk of radius 50cm has a shaft of radius 20cm. A 5kg block is hanging from the rope wound around the rim of

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6) A disk of radius 50cm has a shaft of radius 20cm. A 5kg block is hanging from the rope wound around the rim of the disk. A belt connects the shaft to a pulley of radius 30cm as shown. The block begins to fall down-with an acceleration of 1.5m/s2. (a) Find the angularacceleration of the pulley, (b) Find the angular velocity of the pulley after 15s (4 points)

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