[问答题]
A large spool of rope rolls onff ch yoj2,lajp+k+ h,an/r/) the ground with the end of thexr:uezxq2zxhg5g8 )x dkr 8x*sp (i2/ 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 lengthxr e5k(/hzd)uz2p2sxx x i gr 8q*:xg8 of rope unwinds from the spool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
