[问答题]
A nonrotating cylindri2qg ;q3 vxo t;kg(7orhcal disk of moment of inertia I is dropped onto an identi9o+ wp+swqi)f8n0r6h p6lzo di,rz*u cal disk ro+*w6 wndpsh+o rrqfi0 8),p6zzu9liotating at angular speed $\omega$ Assuming no external torques, what is the final common angular speed of the two disks?