While turning on a banked frictionless surface, the centripetal force is

provided by the vertical component of the normal reaction force on the body.

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provided by the horizontal component of the normal reaction force on the body.

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provided by the total weight of the body.

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cannot be provided by any of the existing forces.

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Solution

The correct option is B provided by the horizontal component of the normal reaction force on the body.

The centripetal force acts towards the centre of the circular curve. The requirement of necessary centripetal force is fulfilled by the horizontal component ( $N sin θ$ ) of normal reaction on the body.

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