Question

A block of mass m = 1.02 kg is suspended above the ground at a height h = 14.4 m by a spool with two arms. The spool-with- arms arrangement is a combination of a solid uniform cylinder of mass M = 3.43 kg and radius R = 0.440 m, and two rods, each of length l = 0.559 m and mass mrod = 0.200 kg. The system is released from rest.

a) How fast will the block be moving just before it hits the ground? Answer in units of m/s.


b) What was in m/s2 the acceleration of the mass m then?


c) What was then, in N . m, the net torque on the cylinder?


d) What was in N the magnitude of the tension on the string?