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A hanging object has a mass of m1 = 0.435 kg; the sliding block has a...

A hanging object has a mass of m1 = 0.435 kg; the sliding block has a mass of m2 = 0.880 kg; and the pulley is a hollow cylinder with a mass of M = 0.350 kg, an inner radius of R1 = 0.020 0 m, and an outer radius of R2 = 0.030 0 m. Assume the mass of the spokes is negligible. The coefficient of kinetic friction between the block and the horizontal surface is ?k = 0.250. The pulley turns without friction on its axle. The light cord does not stretch and does not slip on the pulley. The block has a velocity of vi = 0.820 m/s toward the pulley when it passes a reference point on the table.

(a) Use energy methods to predict its speed after it has moved to a second point, 0.700 m away.


(b) Find the angular speed of the pulley at the same moment.

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