[填空题]
A marble of mass m and radius r rolls along th9-a n9tqfu2l7ix b(gfe looped rough d 3q z6va6kvuo: 5cvic0a19hw track of Fig. 8–58. What is the minimum value of 0kvucvao3z1:5a 6wh 6qidvc9 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
