Ceiling A thin dise of mass M and radius r has a thin massless rope wound around it and attached to the ceiling, as shown n the diagram. The bottom of the disc 15 at a height b=3r above the floor. The disc 1s released from rest, and the string unwinds as the dise falls straight down at an acceleration a. The radius of the disk does not change as the string unwinds. Give all answers in terms of M, r, and known constants. {a) Draw and label the forces {not components) that act on the disk while it 1s falling. {b) How does the tension force Foin the string compare with the force of gravity F; acting on the disc? 1. Check one: Fi