Question

A rotating disc of mass [m] 25 kg and radius [r] 150 mm, shown in Figure 1, is accelerated
from 500 to 3000 rpm in a time of 25 seconds.
If there is a constant friction torque of 5 Nm, determine the following:
(a) The angular acceleration,
(b) The applied torque,
(c) The work done,
(d) The maximum power developed by the driving motor.