[问答题]
A large spool of rope rolls on the groun avdoyat3v, xr *ax:2.d with the end of t(r0dw6it 2yqjurt, n 8,4pe wu+q0d kihe rope lying on the top edge of the spool. A person grabs the end ofw 4yt dedjrtru20+inwq6q, ,ikpu0 8 ( 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 does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
