4. At the instant shown the 50-lb disk has a counterclockwise angular velocity of 5 rad/s when its center has a velocity
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4. At the instant shown the 50-lb disk has a counterclockwise angular velocity of 5 rad/s when its center has a velocity
4. At the instant shown the 50-lb disk has a counterclockwise angular velocity of 5 rad/s when its center has a velocity of 20 ft/s. Determine the kinetic energy of the disk at this instant. w = 5 rad/s 2 ft v = 20 ft/s
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