A solid disk in a machine has a mass of 0.90 kg and a radius of...

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A solid disk in a machine has a mass of 0.90 kg and a radius of 0.087 m. It takes 35 sec for the disk to come to rest from an initial speed of 150 rad/s. a) What was the initial rotational kinetic energy of the disk? [38J) b) How large of a torque must be applied to slow down the disk? [0.014 N-m] A solid disk in a machine has a mass of 0.90 kg and a radius of 0.087 m. It takes 35 sec for the disk to come to rest from an initial speed of 150 rad/s. a) What was the initial rotational kinetic energy of the disk? [38J) b) How large of a torque must be applied to slow down the disk? [0.014 N-m]

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