with the slightest touch, the snail shrinnks into its house with ( 1) displeasure (2) pleasure (3) pain ( 4) surpise
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A railway track goes around a curve having a radius of curvature of 1 km. The
distance between the rails is 1 m. Find the elevation of the outer rail above the inner rail so that there is no side pressure against the rails when a train goes round the curve
at 36 km / hr.
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displeasure..........
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