[问答题]
A large spool of rope rolls o7cv2+gfx ybl ;3ewj9nm/.xm zn the grgm /l-b2bu z0j-daff45w cug tglf8,*ound 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. 8–5cu4,- blug-f*fza0mld2g t/b8w 5fj g0. 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
