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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 km h^-1` is 625 m.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.`(g=9.8 m s^(-2))`.

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