[问答题]
A nonrotating cylindriczcwi.;gd)9ku tyzr-;e, wt y 9al hxe*j .vk98 axdisk of moment of inertia I is dropped onto an identical disk rotating*8hxx9kv .jae at angular speed $\omega$ Assuming no external torques, what is the final common angular speed of the two disks?