On a levelled and frictionless table lay two identical flat and circular disks of mass M = 4 kg and radius R = 0.6 m. The disks touching each other at one point and glued to each at this point. A point mass m = 1.2 kg moves with velocity v = 5 m/s to the positive x axis. The point mass collides with the upper disk and recoils back with half of its initial speed, as seen in the figure. After: As a result of the collision the two disks system begins to move. What is the magnitude of the angular velocity (in radians per second) of the rotation of the two disks system?
