[问答题]
A large spool of rope rolls on the ground with t1(qwa.*w p-lsai f:un he end of th9vuwmntn/t 2bf j4r67s8 luu 3e 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 ttm 2j n7n 46urvl/uu38fbw9sdoes the spool’s center of mass move?
Post time 2025-2-18 20:00:22
