[问答题]
A large spool of rope rolls on the ground with the e+kzk6fqx) to uet(c.o6)ionxmjo8 2-jk5 g w.nd of the rope loqjjk k0 2+ss69 w+vkhying on the top edg62khs+ +wj9qsj vkok 0e 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 of mass move?
Post time 2025-2-18 20:00:22
