[填空题]
A marble of mass m and radius r rmi8bhz2k-js9/x g fh4olls along the loope-cw. .zyauq,ed/2 mz, r 9skvmd 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 loop without lea-dmms ,.,/2.c evwkau 9yqzzrving the track? Assume $r\ll R$ and ignore frictional losses. h = R
Post time 2025-2-18 20:00:22
