gc textbook chapter 8 Rotational Motion (id: edef5090c)

[问答题]
A large spool of rope k.bnv 2rogn5)t+gx c5 rolls on t,jw;azg q5/-g iri)or a +3yddhe ground with the end 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 doesy),wdq3aj/o;z -5dggrr i +ai the spool’s center of mass move?

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