[问答题]
A large spool of rope rolls on the ground with the end of the rope lyacf q,d wc;p).ing on the , af.pd cw)q;cdy.h8 o9r7 xx n5.-pkzlo6 2zmrgmxb8top edge of the spool. A person grabs the end of the rope and walks a distance L, holding onto np8 .or .g m9bdrmkl85 7yhz2 -x6xozxit, 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
