[问答题]
A large spool of rope rolls on the ground with the v;o9.8s/co 1vr hf:yf cswwt6end ojtbrmq;nkr w)6x k0 fdly2xx d7 +01h;f 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 without slipping. What length of rope unwinds from the sl)k qk0rm;f bx;h7d6w2t0 yj 1nd+xxrpool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
