[问答题]
A large spool of rope rolls on tfkq8v:z.rs/ k he ground with the end .oix,sn5gl00 l ed wx3of 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 from the spool? How far does the spool’s center ofxdxl 0i0ln,w go.5s 3e mass move?
Post time 2025-2-18 20:00:22
