[问答题]
A nonrotating cylindrical disk o 4fl w)zs-ee,deq *grwg:y69y5n0l n of moment of inertia I is droppeq:k6d01a o0m fs.r pojd onto an identical disk rotating at angular spepj6kdm0 r:0oqo1 .s faed $\omega$ Assuming no external torques, what is the final common angular speed of the two disks?