[问答题]
A large spool of rope .c rxctho) 8lqd7r s ,tb.8m8orolls on nv 7mz )1(6xi/zrpbhd+we u0v 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. Thevz(uivd70h er1+ x)npmb6wz / 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
