[问答题]
A large spool of rope rolls on the ground with the end o vkjn7r8m0 p4vf the rope clvte n)c:3vg4 xef/9;kh- qnbma a,+ 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 thex/-lfn3ea4e+c)tgn h c9 k amvq:bv,; spool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
