[问答题]
A large spool of rope rolls on the ground with the end of the yye84hivke kda)w78,6 gycefx+ p1:w rope lyi0uaz4qxxfvfoq a + ),dc 0qx3.. sglm(ng 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 wal0c d4fu3 ,)xoxv.q+0mz s a (.qxfqgithout 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
