Q. In a circus stuntman rides a motorbike in a circular track of radius $R$ in the vertical plane. The minimum speed at highest point of track will be
A) $\sqrt{2gR}$
B) $2gR$
C) $\sqrt{3gR}$
D) $\sqrt{gR}$
Explanation
(d) Minimum speed at the highest point of vertical circular path $v = \sqrt{gR}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.