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

Options

A. horizontal
B. concave
C. convex
D. same on all surfaces

Answer

B

Explanation

On horizontal surface, `R=mg`
On concave shaped surface ,`R=mg+(mg^(2))/(r)`
On convex shaped surface, `R=mg-(mg^(2))/(r)`