[问答题]
Two blocks, each of mass m, j8we5 ,lak )vqare attache mqstk0a+9z8c d to the ends of a massless rod which pivots as shown in Fig. 8–40. Initially the rod is held in the horizontal position and then released. Calculate the magnitude and direction of the net torque+cs mqa0t9kz 8 on this system.
Post time 2025-2-18 20:00:22
