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A horizontal 781 N merry-go-round of ra- dius 1.75 m is started from rest by a constant horizontal force of 75 N applied tangentially

A horizontal 781 N merry-go-round of ra- dius 1.75 m is started from rest by a constant horizontal force of 75 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go- round after 3.97 s. The acceleration of gravity is 9.8 m/s. Assume the merry-go-round is a solid cylinder. Answer in units of J.

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