[问答题]
A large spool of rope rolls on the gr*(1( 20rfnay iqbqarb gpd 6ll0u.+ucound with the end of thlt vv yrrm7wm;w2z;u;k5b8/we 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 ropvvu ;wm;wwmb58z7yt 2/lrr; k e unwinds from the spool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
