[问答题]
A nonrotating cylindrical disk of mom cv7jr1(h4 f.o 8rbufient of inertia rv) ;.g jymfyxp/m u74I is dropped onto an identical disk rotating .m4)r gvympu f;7xyj/at angular speed $\omega$ Assuming no external torques, what is the final common angular speed of the two disks?