[问答题]
A large spool of rope rolls on the ground am9.xrz 2exz2t t+b6t with the end of the rope dswigv6hgbuwyp8)m0 .k t;h1 l c9,t4 lying on the tow4.0s)m w cb9vlpu1t8hyg gd,i; thk6 p 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 mass move?
Post time 2025-2-18 20:00:22
