Consider two sizes of disk, both of mass m. one size of disk has radius r; the other has radius 4r. system a consists of two of the larger disks rigidly connected to each other with a common axis of rotation. system b consists of one of the larger disks and a number of the smaller disks rigidly connected with a common axis of rotation. if the moment of inertia for system a = the moment of inertia for system b, how many of the smaller disks are in system b? 1 4 10 16