[问答题]
A nonrotating cylindrical disk of moment of inery(ffs(z 1r7gd;es k4j 0 w .y30czueultith zc)de o52gj46 ou4ka I is dropped onto an identical disk roh5u6cjkeoo tzd )424g tating at angular speed $\omega$ Assuming no external torques, what is the final common angular speed of the two disks?