Why gaps are left between two sections of a railway track?

Why gaps are left between two sections of a railway track?
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1 Answer

Answer :

The gaps allow the expansion and contraction of rails during summer and winter season.
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Railway tracks are banked on curves so that : (1) the train may not fall down inwards. (2) the weight of the train may be reduced. (3) necessary centripetal force may be obtained from the horizontal component of the normal reaction due to track. (4) no frictional force may be produced between the wheels and the track.

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