[问答题]
A large spool of rope rolls on the ground with the end of th24j+y zr7w/syr wrh bs5;1mw d.wyey+e rope lyinw9x/-sqbh msr qi 7yxd2by1-5g on the top edge of the spool. A person grabs the end of the rope and walks a distance L, holding onto it, Fig. 8–50. The spool rolls behind the person without slipping. What length of rope unw bx5/ ds-7mrswhixby- yq2q91inds from the spool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
