[问答题]
A large spool of ropexu7-l5q; gm gfjjs+c4 xfm.picg;5x( rolls on 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 (c . pfmixgx;5far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
