Gravitation Question 144

Question: For the moon to cease to remain the earth’s satellite, its orbital velocity has to increase by a factor of [MP PET 1994]

Options:

A) 2

B) $ [\sqrt{2}] $

C) $ [1/\sqrt{2}] $

D) $ [\sqrt{3}] $

Show Answer

Answer:

Correct Answer: B

Solution:

$ [v_{e}=\sqrt{2},v_{0},] $ 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.



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