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The radius of curvature of a railway tra...

The radius of curvature of a railway track at a place where the train is moving at a speed of `72 kmh^(-1)` is `625m`. The distance between the rails is 1.5 m. Find the angle and the elevation of the outer rail so that there may be no side pressure on the rails, Take `g = 9.8 ms^(-2)`.

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