Cosider earth to be a homogeneous sphere. Scientist A goes deep down in a mine and scientist B goes high up in a bollon. The value of g measured by

Options

A. `A` goes on decreasing and that by `B` goes on increasing
B. `B` goes on decreasing and that by `A` goes on increasing
C. Each decreases at same rates
D. Each decreases at different rates

Answer

D

Explanation

For scientist A which goes down in a mine
`g'=g(1-d/R)`
For scientists `B`, which goes up in air `g'=g(1-(2h)/R)`
So, it is clear that value of `g` measured by each will decreases at different rates.