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Free body diagram (FBD) for a car which is moving on a frictionless circular road has an angle \theta with the horizontal. Choose the correct FBD for car and specify reasons to choose it.

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S safeer

 Resolve force vectors into components that are parallel to and perpendicular to the acceleration of the object. In the case of a vehicle driving around a banked curve the acceleration is horizontal, towards the center so it's the normal force (and friction if any) that you would resolve into components.

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