[填空题]
A marble of mass m and radius r rolls along64 mibe+v m:wqd :;oyq the looped rough track of F2xadyiy4-md- ig. 8–58. What is the mid xym24-d- ayinimum value of the vertical height h that the marble must drop if it is to reach the highest point of the loop without leaving the track? Assume $r\ll R$ and ignore frictional losses. h = R
Post time 2025-2-18 20:00:22
