Problem 2: A 24-crn-dian1eter, 2.5 kg solid disk is rotating at 150 rpm around an axis that is perpendicular to the plane of the disk and passes through its center. A Him-diameter. 1.: lug loop is dropped straight down onto the rotating disk. Friction causes the loop to accelerate until it is riding on the disk. What is the nal angular velocity of the combined system? Moment of inertia of a disk about a perpendicular axis passing through its center is given as H rnlt'. Moment of inertia of a loop about a perpendicular axis passing through its center is given as mit