[问答题]
A large spool of rope rolls ontsq.6a5s(+gccbs* ;jj edn;b2c fs, nh54f6junu gx/nd)ur8 the ground with the end of 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 c jnn6s/,fduhu4u5grfnx2)8 of mass move?
Post time 2025-2-18 20:00:22
