a motor-driven winch for raising loads on a building site. As the
motor turns the cable is wound around the drum, raising the load.The drum, axle and other rotating parts have a moment of inertia about the axis of rotation
of 7.4 kg m2
, and the mass of the load is 85 kg. The drum has a radius of 0.088 m.
The load is accelerated uniformly from rest to a speed of 2.2 m s–1. When it is accelerating
it rises through a height of 3.5 m. It then continues at the constant speed of 2.2 m s–1
.
(a) Show that the drum turns through 40 rad as the load accelerates.
could someone please explain how to do this question ?