[问答题]
A large spool of ropec5 , ui8akaj: (tb0kvkah6r jb2/hvw)ztu9 e v1-hc i3 rolls on the 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 withouu-z ht6b29wj13 )vhvcr /hia et 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
