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On a banked race track, the smallest circular path on which cars can move has a...

On a banked race track, the smallest circular path on which cars can move has a radius of 114 m, while the largest has a radius of 163 m, as the drawing illustrates. The height of the outer wall is 14.6 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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