[问答题]
A large spool of ropecp s*2 ,zh q6it+p+-j 6sbkn vfz3qxv8 rolls on the ground with the end 9p us29i/ ,he+bi:fqo wzto9iof 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 lispo2ez/bq+9f9 u oti h,9i:wength of rope unwinds from the spool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
