[问答题]
A large spool of rope rolls on the ground with the end of tv0oau qewgjim):jcf0 , x h ,3;v-olk2he rope lying on t. grh8f 3uah9;k.h var 7zboq3he top edge of the spool. A person grabs the end of the rope and walks a distance L, holding onto it, Figrk h3qbh ;3 hv8.zo7ga9f ua.r. 8–50. The spool rolls behind the person without slipping. What length of rope unwinds from the spool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
