Q. The minimum velocity at the lowest point, so that the string just slack at the highest point in a vertical circle of radius $l$
A) $\sqrt{gl}$
B) $\sqrt{3gl}$
C) $\sqrt{5gl}$
D) $\sqrt{7gl}$
Explanation
The correct answer is Option C: $\sqrt{5gl}$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.