[填空题]
A marble of mass m and radius r rol* /udo wrm)i3tls e);7glh3 ku jwd;a(j4-pzh 8vu2if qhalong 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 lookep )( a8;j7 jqhuhifhg-uv;dwz 43l 2p without leaving the track? Assume $r\ll R$ and ignore frictional losses. h = R
Post time 2025-2-18 20:00:22
