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5. A uniform circular wheel (I-M R) with radius, R=1.0 m and mass, M-50.0 kg is spinning at 120 rev/min. At a particular moment of time (that we denote t-0) the wheel is subjected to a frictional force F=20.0 N applied tangentially at its rim. (a) The magnitude of the angular velocity of the wheel (in rad/s) after t=25 s is (b) The number of revolutions done by the wheel after 10 s