[问答题]
Two blocks, each of malrs h7 7bfh,9pss m, are attached to the w*ibhqyv3a3yu 14 - zuends of a massless rod which pivots as shown in Fig.uv-1*u3bazqh w 4 yy3i 8–40. Initially the rod is held in the horizontal position and then released. Calculate the magnitude and direction of the net torque on this system.
Post time 2025-2-18 20:00:22
