[问答题]
A large spool of rope rolls ospw; lcvbn/g7 q67a:bosrwj;;m.v (v n the ground with the end tz,nu8o5gkfmd 9q 3w8of 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 r5fkm g3wt89nqz o ud8,olls 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
