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In the figure provided, the sliding block has a mass of 0.850 kg, the counterweights has a mass of 0.420 kg, and the pulley is a hollow cylinder...

45). In the figure provided, the sliding block has a mass of 0.850 kg, the counterweights has a mass of 0.420 kg, and the pulley is a hollow cylinder with a mass of 0.350 kg, an inner radius of 0.020 0 m, and an outer radius of 0.030 0 m. The coefficient of kinetic friction between the block and the horizontal surface is 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 0.820 m/s toward the pulley when it passes through a photo gate. (a) Use energy methods to predict its speed after it has moved to a second photo gate, 0.700 m away. (b) Find the angular speed of the pulley at the same moment.

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