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  4. A railway track is banked for a speed v, by making the height of the outer rail ' h ' higher than that of the inner rail. The horizontal separation between the rails is d. The radius of curvature of the track is ' r ': then which of the following relation is true?

Q. A railway track is banked for a speed , by making the height of the outer rail ' ' higher than that of the inner rail. The horizontal separation between the rails is . The radius of curvature of the track is ' ' : then which of the following relation is true?

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Solution:


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