[问答题]
A large spool of rope rolls on the ground with the end of - d(7a9k*nh),;tr 6l 38kjxwxe pfiawy7lzc k*k3o p1yxe cm7 the rope lying on the top edge of the spool. A person grabs the end of th1yp* e7kxo3cm e rope and walks a distance L, holding onto it, Fig. 8–50. The spool 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
