[问答题]
A nonrotating cylindrical disk of moment otqy rzlo;qq,f4; gi3 edr+ 03kf inertia I is dropped onto an lv07g pl,n+qwq1 fcwi3 )gf)w identical disk rotating a gl71lw3, +qngffc qvw 0i)pw)t angular speed $\omega$ Assuming no external torques, what is the final common angular speed of the two disks?