How the acceleration due to gravity (g) vary on and above earth\'s sur

1.	How the acceleration due to gravity (g) vary on and above earth\'s surface?
Answer» Acceleration due to gravity above the surface of earth\tTo calculate the value of acceleration due to gravity of a point mass m at a height h above thesurface of the earth.\xa0Above figure shows the value ofacceleration due to gravity g at a height h above the surface of the earth.\tForce of gravitation between the object and the earth will be\tF= G mMe/(Re+h)2 where\tm = mass of the object, Re\xa0= radius of the earth\tg(h) = F/m = GMe/(Re+h)2\xa0= GMe/[Re2(1+h/Re)2]\th << Re\xa0(as radius of the earth is very large)\tBy calculating we will get,g(h) = g(1-2h/Re)\tConclusion: -The value of acceleration due to gravity varies on the surface, above the surface and below the surface of the earth.

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