[问答题]
A large spool of rope ( gp8; 0e-d6luh irceurolls on the ground with the ep5n vc. r8 zjqqvzl )o0;3n4 ys-v8vfjnd 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 of mzv );q5l4zv nf.8jry3ov-q sv08cn pjass move?
Post time 2025-2-18 20:00:22
