[问答题]
A large spool of rope rolls on the ground with the oy4u/ie d1df 1end of the rope ly78lv9 xhxyzno9i *1uf ing on the top edge of the spooyoxn 8 i1 *lvxh97uzf9l. 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 does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
