Acceleration due to gravity decreases as we go below the surface of the earth. What will be the nature of the graph between the change of acceleration due to gravity and the depth below the surface of the earth ?

Explanation

The acceleration due to gravity at a depth d below
the surface of the earth is given by,
`g^.=g(1-d/R)=g-gd/R or, g-g^.=gd/R`
Since g and R are constants,
`g-g^. prop d`
So the graph between `(g-g^.)` and d will be a straight line.