[问答题]
Two blocks, each of mass m, a4e ypw;wyb5l f qf8k.)re attby/n7r-ytwm5 l d if)-ached 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. Calculatfwmt 5nlbd )-yr7-iy/e the magnitude and direction of the net torque on this system.
Post time 2025-2-18 20:00:22
