The acceleration due to gravity g is proportional to r till thesurface of Earth and is inversely proportional to r2 outside the surface of Earth. That is, g ∝ r ; till surface of Earth g∝
1
r2
; outside the surface of Earth Therefore, the graph shows linear behaviour till the surface of Earth, that is, till r and beyond R it shows
1
r2
decay thus the variation of g on the Earth is represented as