[问答题]
A nonrotating cylindrical disk of moment oi )vz;cmv69ekpqs 78af inertia I is dropped ontob).ec e,ob4x jln2me5 an identical disk rotaee.5e,x2bcn j)o4l mb ting at angular speed $\omega$ Assuming no external torques, what is the final common angular speed of the two disks?