[问答题]
A nonrotating cylindrical disk ofq;mhajc o -:olz5 3vq) moment of inertia I is dropped onto b22i.1saw/ hmh b s6w( *n 7tf5nhd uvb3fw1ndan identical disd*ambsnvuww sfhhb 5ftw 2n/(1.36id12h 7bnk rotating at angular speed $\omega$ Assuming no external torques, what is the final common angular speed of the two disks?