A rope of negligible mass is wound round a hollow cylinder of mass `3kg` and radius `40cm`. What is the angular acceleration of the cylinder if the rope is pulled with a force of `30N`? What is the linear acceleration of the rope ? Assume that there is no slipping.

A cord of negligible mass in wound round the rim of flywheel of mass 20 kg and radius 20cm mounted on a horizontal axis Calculate the angular acceleration of the wheel if a steady pull of 25N is applied on the cord. Moment of inertia of flywheel about its axis= MR^2/2