Railway tracks are banked on curves

necessary centrifugal force may be obtained from the horizontal component weight of the train

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to avoid frictional force between the tracks and wheels

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necessary centripetal force may be obtained from the horizontal component of the weight of the train

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the train may not fly off in the opposite direction

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Solution

The correct option is C necessary centripetal force may be obtained from the horizontal component of the weight of the train
The banking is provided to counteract the centrifugal force which acts (away from the center of the curve) on the train. Here component of weight is towards center providing necessary centripetal force as shown in diagram.

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Similar questions

Railway tracks are banked at the curves so that the necessary centripetal force may be obtained from the horizontal component of the reaction on the train.

A car moving in a horizontal road may be thrown out of the road in taking a turn this is because of lack of centripetal force but why not friction between the road and tyre??

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Question 7 NCERT Pg 128

A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate:

(a) the net accelerating force;

(b) the acceleration of the train; and

{The explanation of this question on the Byju's premium app is wrong; the weight of the engine has not been considered}

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