[填空题]
A marble of mass m and radius r rolls alongu1elbi9-ak z 3bvzzl.s ) v9t2 the ,; c3f +c8xqniyjotxp;a r 54qlooped 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 withjio c4 fxtx;3ay5pqn ,q ;c+r8out leaving the track? Assume $r\ll R$ and ignore frictional losses. h = R
Post time 2025-2-18 20:00:22
