gc textbook chapter 8 Rotational Motion (id: edef5090c)

[问答题]
A large spool of rope rolls on the ground with the1ozznr h5(o118klr z tz* ,phb ck7r2 .tjv;qu, 75v2s znwoc yend of 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 s5wnvcq.sz2,7t c7ukjr ;2 ovypool’s center of mass move?

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