Q. For the moon to cease to remain the earth’s satellite, its orbital velocity has to increase by a factor of
A) 2
B) $\sqrt{2}$
C) $1/\sqrt{2}$
D) $\sqrt{3}$
Explanation
(b) $v_{e} = \sqrt{2}\ v_{o},\ i.e.$ if the orbital velocity of moon is increased by factor of $\sqrt{2}$ then it will escape out from the gravitational field of earth
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.