A clockwise variable torque is applied to a flywheel at time t= 0 causing its clockwise...

A clockwise variable torque is applied to a flywheel at time t= 0 causing its clockwise angular acceleration to decrease linearly with angular displacement during 20 revolutions of the wheel as shown. If the clockwise speed of the flywheel was 300 rev/min at t =0 , determine its speed N after turning the 20 revolutions. (Suggestion: Use units of revolutions instead of radians.)