[问答题]
A nonrotating cylindricalq4ea 4.p0p mcgeddr :wb)8kc3 disk of momehi f3atpq 8):*x dqd1rm s2w5knt of inertia I is dropped onto an identical disk rotatinr * iqp)hxqtw2m:a3 d5f8 1kdsg at angular speed $\omega$ Assuming no external torques, what is the final common angular speed of the two disks?