A wheel mass 30 kg radius of gyration 420 mm spins freely, Ask an Expert

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A wheel, mass 30 kg, radius of gyration 420 mm, spins freely at 1600 RPM. Frictional torque is 2.3 Nm. Using both force and energy methods, determine the number of revolutions made by the wheel in coming to rest. Also determine the time taken (in minutes).

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