[问答题]
A large spool of rope ro6rwrnj y j 8srpfy *o8ye /7,l7qy8;kulls on fovnry g //g1te501p othe 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 t/ ongtgeoy0pv/11r f5he spool’s center of mass move?
Post time 2025-2-18 20:00:22
