A string is wrapped around a uniform disk of mass M = 1.2 kg and radius R = 0.11 m (Figure 11.113). (Recall that the moment of inertia of a uniform disk is .) Attached to the disk are four low-mass...

A string is wrapped around a uniform disk of mass M = 1.2 kg and radius R = 0.11 m (Figure 11.113). (Recall that the

moment of inertia of a uniform disk is .) Attached to the disk are four low-mass rods of radius b = 0.14 m, each

with a small mass m = 0.4 kg at the end. The device is initially at rest on a nearly frictionless surface. Then you pull the

string with a constant force F = 21 N. At the instant that the center of the disk has moved a distance d = 0.037 m, a length

w = 0.032 m of string has unwound off the disk.