[问答题]
A large spool of rope r kv4-pp (j3zht,h5ca xolls on the ground with the end of the rope p3 ak;s)2dzjl9md/ak i.nh tc29bxr3 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? )a3 k/ihbd 23tacm lsnz.pj;29 kx 9rdHow far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
