[问答题]
A large spool of rope rolls on the ground with th,6lnv4j 0q)ho d ebn ;(okf.ej.1v jere end of th30yio cl./r(qye+r wle rope lying on the top edge of the spool. A person grabsri yco.l3/( q+rlew 0y 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
