contestada

Initially, a person is sitting stationary on stool that can rotate on a frictionless pivot, and the person is holding a spinning wheel with its axis vertical as shown. The moment of inertia of the person+stool about the stool's axis is Ip 20 kg m2. The wheel has moment-of-inertia Iw 5 kg m2 about it axis and it is initially spinning at f 4 revs/s. The person briefly reaches up, presses her hand against the wheel, slowing the wheel so that is it spinning at 2 revs, always holding the wheel axis vertical. What is the final rotation rate of the person, after the wheel has slowed? |w = 5 kg m2 |w = 5 kg m2 fw = 4 rev/s fw = 2 rev/s Ip - 20 kg m2 Ip 20 kg m f=? Initial Final