Why are banking of road necessary?
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The value of coefficient of friction when road is wet or extra smooth or tyres of vehicles are worn out . This force of friction is not reliable source for providing the centripetal force to vehicle
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Explanation:
In circular motion, centripital force is provided by force of friction. When speed of a car is increased at a turn, then frictional is not sufficient to provide centripital force. Thereforee, roads are banked.
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