On a banked race track, the smallest circular path on which cars can move has a radius of 101 m, while the largest has a radius of 163 m, as the drawing illustrates. The height of the outer wall is 19.0 m. Find (a) the smallest and (b) the largest speed at which cars can move on this track without relying on friction.
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without relying on friction, I assume you mean that the cars scrape along the wall, since they cannot grip the road without friction.
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