Consider earth to be a homogeneous sphere, Scientist A goes deep down in a mine and scientist B goes high up in a balloon. The acceleration due to gravity as measured by:

Question

Philoid · Accepted Answer

The acceleration due to gravity goes on decreasing for both the scientists A and B.

For scientist B,

Since,

So, as the distance from the centre of earth increases, the value of g decreases.

For scientist A,

Let scientist A be at a depth d. Then only attraction is due to the sphere (R – d), where R is the radius of earth. As the attraction due to rest of the earth cancels out, so the value of g decreases.

Hence, option D is correct.