[问答题]
A large spool of rope rolls on the gr)udjew-fu 9sfb; ;m9r5 pww 3 /.gzhhxound with t*;ze(sr /tsrrhe 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 frorr t(*r;sz/se m the spool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
