[填空题]
A marble of mass m and radius r rolls along the loor4 by sho6q5)sbzw2) tutv5w7pegmf0mwvvb gk102 / sq1d rough track of Fig. 8–58. Whatv2 bm11m/g 0sgkqw0 vf is the minimum 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
