what is the tangential acceleration of a point on the edge of the pulley?

Question

A pulley with a radius of 7.7 cm has a moment of inertia of 3 kg*m2. If the net torque acting on the pulley is 8 N*m, what is the tangential acceleration of a point on the edge of the pulley?

Answer 1

The relevant equation is L = Iα, where L is the net torque, I the moment of inertia, α the angular acceleration. The angular acceleration a is related to the tangential acceleration by α = a/r. Substitute the given information into these equations to get your answer (remember to change 7.7 cm to meters).