Question

A string is wrapped around a uniform disk of mass ^M and radius ^R. Attached to the disk are four low-mass rods of radius ^b, each with a small mass ^m at the end (Figure 9.63).

The apparatus is initially at rest on a nearly frictionless surface. Then you pull the string with a constant force ^F. At the instant when the center of the disk has moved a distance ^d, an additional length ^w of string has unwound off the disk. (a) At this instant, what is the speed of the center of the apparatus? Explain your approach. (b) At this instant, what is the angular speed of the apparatus? Explain your approach.

Short answer

Data given

Step-by-step solution

Step 1

This is step 1$m$