[问答题]
A large spool of rope rolls on thy9w s+ u-*q-uwy7zl0v,d zdn ae ground withbmz q,7i3 11n eonbk:b 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 ,mb n7b1b:1zqk3on ie 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
