gc textbook chapter 8 Rotational Motion (id: edef5090c)

[问答题]
A large spool of rope ro p+5vq1 pyh8mszl;t l.lls on the ground with the end of the rope lying on the4 q/xmz sihno0 s5jr8; 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 slipp5nrzxs4shioq8 j/;0 m ing. What length of rope unwinds from the spool? How far does the spool’s center of mass move?

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