[问答题]
Two blocks, each of mass shzs45v2f( zbb( 7-rp3kl nrqum5 g, vm, are atw4(ev j4 (f)fefqm h,ttached 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 rev(4w,jf)h (f4 mfeteq leased. Calculate the magnitude and direction of the net torque on this system.
Post time 2025-2-18 20:00:22
