Is there a force of friction between the wheels of a moving train and iron rails? If yes, name the type of friction. If an air cushion can be introduced between the wheel and the rail, what effect will it have on the friction?

AcademicPhysicsNCERTClass 8

Yes, there is a force of friction between the wheels of the train and iron rails. As the wheels of the train roll on the iron rails, friction between them is a kind of rolling friction. If an air cushion is introduced between the wheel and rail, the friction will become less as there is no contact between the surfaces of the wheel and rail.

raja
Updated on 10-Oct-2022 13:29:11

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