gc textbook chapter 8 Rotational Motion (id: edef5090c)

[问答题]
A large spool of rope rolls on the ground with th zsa,di:hp 6l c/7fy7te end of the romsu( rf9s3/+dxo7 h6mupue 5kpe 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 t f93(umm xkps7r +/osduhue5 6he spool’s center of mass move?

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