[填空题]
A marble of mass m and radius r rolls along the looped rough track oxpy+ v5v -t+pjfg zi) y*(uw;df6n:hq q Fig. 8–58. What is the mf(zh)yqduwi * ;ng 6q:inimum 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
