A wheel is disconnected from a motor and come to rest from 14,000 rpm because of a 0.90 m·N frictional torque.
1) If the mass of the wheel is 4.1 kg and we assume the wheel is a solid cylinder of radius 79 mm, what is its moment of inertia?
kg·m2
2) How long will it take to come to rest?
s
3) How many revolutions has the wheel turned before coming to rest?
rev