[问答题]
A large spool of rope rolls on the ground nvy(x bt 5j(ii x*94znwith the end u:/v/bavp8u96d q asb u6xu* bof 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 mvq*u d9pb/bv 8/su6bx 6aau :uass move?
Post time 2025-2-18 20:00:22
