[问答题]
A large spool of rope rolls on the ground with thy;m.j- ggl :phqm9j20xld6j9q t xc9ie end of the rope:m iyx 42b+yrcm:gx 5oko+0kl lying 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 xbykrolcg5k: mi oy4 +0m:2+xspool rolls behind the person without slipping. What length of rope unwinds from the spool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
