[问答题]
Two blocks, each of mass m, are(h-jlaqd1x+ p attached to the enj 8yov vga l+6se:p81kds of a massless rod which pivots as shown in Fig. 8–40. Initially the rod is held in the horizontal :j68sglkv 8poye 1+ avposition and then released. Calculate the magnitude and direction of the net torque on this system.
Post time 2025-2-18 20:00:22
