Question

If $\theta$ is instantaneous angle which the line joining the particle and the centre of the loop makes with the vertical, then identify the correct statement(s) related to the normal reaction $N$ between the block and the surface

• A. The maximum value $N$ occurs at $\theta =0$
• B. The minimum $N$ occurs at $N=\pi$ for $H>5R/2$
• C. The value of $N$ becomes negative for $\pi /2<\theta <3\pi /2$
• D. The value of $N$ becomes zero only when $\theta \ge \pi /2$

Answer 1

The correct option is D The value of $N$ becomes zero only when $\theta \ge \pi /2$