[问答题]
A large spool of rope rol.3(e :qhkied clnh4 , 8) ummzjc/3jsy0q,vop gs on the ground with the end of the rope 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 spool rolls behind the person without slipping. What length of rope unwinds from the spool? How far does the spool’,8nmzp0 /gvh3 u4jqm )ycj,so s center of mass move?
Post time 2025-2-18 20:00:22
