The angular momentum of a fly-wheel having a rotational inertia of around 0.200 kg•m2 about its central axis reduces from 3.00 to 0.800 kg•m2/s in 2.40 s.
(i) Determine the magnitude of the average torque acting on the fly-wheel about its central axis throughout this period?
(ii) Supposing a uniform angular acceleration, via what angle does the fly-wheel turn?
(iii) Determine how much work is done on the wheel?
(iv) Find out the average power of the fly-wheel?