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  4. The variation of acceleration due to gravity g with distance d from centre of the earth is best represented by (R = Earth’s radius) :

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Q. The variation of acceleration due to gravity g with distance d from centre of the earth is best represented by (R = Earth’s radius) :

Solution:

image
$g =\frac{ GMx }{ R ^{3}}$ inside the earth [Straight line]
$g =\frac{ GM }{ r ^{2}}$ outside the earth
where $M$ is mass of earth