[问答题]
A large spool of rope rolls on pti6.nsn(8-760rncx y;p3 qk kn hiqp(mk+iwthe ground with the end of t mjxiwm, ,3o43p( nxuihe rope lying on the top edge of the spool. A person grabs the end of the rope and walks a distance L, h, p3xnj3m oii4,(mwuxolding 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
