A disk of kg is attached to one end of a rope, as illustrated in the diagram. The other end is at a joint in the center of the platform. If the platform is rotating rapidly, the disk is on it and is released from rest, determine the time it takes for the disk to reach a sufficient speed to break the rope. The maximum tension that the rope can withstand is 100N, and the coefficient of friction between the disk and the platform is 0.1. Resp: t = 5.89