Question

[PHYSICS
Is the value of g constant at surface of earth? Give reason for your answer.
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Answer 1

no we know

g =GM/distance2

so distance change so g change

in equator distance increase from earth hence g decrease while at poles distance decrease then g increases hence g changes

Answer 2

If you meant the Gravitational constant ‘G’ It’s a derived figure which acts as a multiplier to the product of masses and the distance between them applicable to objects with any mass seperated by any distance. It’s a constant, and will remain a constant.

If you meant ‘g’, the acceleration due to gravity is largely dependent upon the distance of the object from the center of the attractive force. The ‘g’ on the surface of a body depends on its density and distance from the attraction. On the surface of the Earth with a mean density of 5.5 g/cc and a radius of attraction of 6,400 kms the ‘g’ is 9.8 m/s2.