Normal reaction on a vehicle on a convex, concave or flat road

1. A.
   convex
2. B.
   concave
3. C.
   horizontal
4. D.
   same on all the 3 surface

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1. A.
   $mg$
2. B.
   $\dfrac{mv^2}{R}$
3. C.
   $mg - \dfrac{mv^2}{R}$
4. D.
   $mg + \dfrac{mv^2}{R}$

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