A wheel on a game show is provided an initial angular speed of 1.31 rad/s. It comes to rest after rotating via 3/4 of a turn.
(i) Determine the average torque applied on the wheel given that it is a disk of radius 0.79 m and mass 6.4 kg.
(ii) When the mass of the wheel is halved and its radius is twice, will the angle through which it rotates before coming to rest increase, decrease, or stay the similar?