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Q.

A vehicle is moving with uniform speed along horizontal, concave and convex surface roads. The surface on which, the normal reaction on the vehicle is maximum is

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a

CONCAVE

b

CONVEX

c

HORIZONTAL

d

SAME AT ALL THE SURFACES

answer is A.

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Detailed Solution

ON  a concave surface or in a dip  NORMAL REACTION      N = Mg + M V2R  Where  M is the mass of the vehicle and R is the radius of the surface.
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