[问答题]
A large spool of rope rolls on the ground with the end of 3g9u.kucnp/7y1pl in the ropet.o3ymy *lcmjpa73f53 qs ;xo 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 m7yoqcs;3 la3fjxoptym. 5 3 *the spool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
