Question

A motorcycle is going on an over bridge of radius $R$. The driver maintains a constant speed. As the motorcycle is ascending on the over bridge, the normal force on it

• A. increases
• B. decreases
• C. remains the same
• D. fluctuates

Answer 1

Answer: (A)

Here, $R=mg\cos \theta -\frac{m{v}^2}{R}$
It is clear from the figure that a decreases with height,
so that $\cos \theta$ increases and as a result of which normal force $N$ increases.