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A 15.0 kg mass and a 10.0 kg mass are suspended by a pulley that has a radius of 10.0 cm and a mass of 3.0 kg. The cord has negligible mass and causes the pulley to rotate without slipping. The puller is frictionless and may be treated as a uniform solid cylinder. Note that the tension in the cord is not the same on both sides of the pulley. a)Determine the speeds of the two masses as they pass each other. b)Determine the tension in the cord on either side of the pulley. c) Determine the total kinetic energy of the system at the instant the pulley's angular displacement is 30.0 rad.

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