[问答题]
A large spool of rop0 h (7*xfws)l o7qwhbze rol owfya64zg5: nls 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 without slipping. What length of rope unwinds ay5 :4fwn6g zofrom the spool? How far does the spool’s center of mass move?
Post time 2025-2-18 20:00:22
