GravitationHard
Question
The height at which the acceleration due to gravity becomes 
(where g = the acceleration due to gravity on the surface of the earth) in terms of R, the radius of the earth is
(where g = the acceleration due to gravity on the surface of the earth) in terms of R, the radius of the earth isOptions
A.2R
B.
C.
D.√2R
Solution
g′ = 
, acceleration due to gravity at height h
⇒
⇒
⇒ 3R = R + h ⇒ 2R = h
, acceleration due to gravity at height h ⇒
⇒
⇒ 3R = R + h ⇒ 2R = h
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