[填空题]
A marble of mass m and radius 6h) wsc9nrq-f r rolls along th e9e6zxg f,f58ixo1pv e looped rough track of Fig. 8–58. What is the minimum,fv9x5zo1pe fixe6 8g 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
