[填空题]
A marble of mass m and ra*j ylh0xxb/g 8dius r rolgpegw)1;e5 kz,z/mzm ls along the looped rough track of Fig. 8–58. What is the minimum value of the vertical height h that the marble must drop if it is to reach the highest point of the l pm)g1 /w;ezmzze ,5kgoop without leaving the track? Assume $r\ll R$ and ignore frictional losses. h = R
Post time 2025-2-18 20:00:22
