[问答题]
A nonrotating cylindrical n8hs2orz;5oex3eto 2 disk of moment of inerdq7)zn;ha:ik5 w /vt9z9fym ntnk *5xtia I is dropped onto an identical disk rotating at nmh:fk wa; ykd95iz v/x) 9q*t7n5 nztangular speed $\omega$ Assuming no external torques, what is the final common angular speed of the two disks?