Question

A body moves along an uneven road surface with constant speed at all points. The normal reaction of the road on the body -

• A. at A is less than mg
• B. at B is greater than mg
• C. is least at C as compared to A and B
• D. is least at B as compared to A and C

Answer 1

The correct option is D is least at B as compared to A and C

At A and C,
$N=mg+\frac{m{v}^2}{R}$
At B,
$N=\frac{m{v}^2}{R}-mg$