Chapter 8, Problem 89GP

The small mass m sliding without friction along the looped track shown in Fig. 8–44 is to remain on the track at all times, even at the very top of the loop of radius r. (a) In terms of the given quantities, determine the minimum release height h. Next, if the actual release height is 2h, calculate the normal force exerted (b) by the track at the bottom of the loop, (c) by the track at the top of the loop, and (d) by the track after the block exits the loop onto the flat section.

FIGURE 8–44

Problem 90.