[填空题]
A marble of mass m and radius r rf iwotg0:1g q4ollsddj1egl k.t5okp p) 3s,b sq014a(ts1wt ,qix 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 loojasd10 siq3p kp14l, e.5 xqbs)dkgtt1t,o( wp without leaving the track? Assume $r\ll R$ and ignore frictional losses. h = R
Post time 2025-2-18 20:00:22
