Question

The value of acceleration due to gravity

(a) is same on equator and poles (b) is least on poles

(c) is least on equator (d) increases from pole to equator ​

Answer 1

(c) is least on equator

We know,

g = GM/R²

Let, distance of the core of earth to the equator = R

And, distance of the core of earth to the poles = r

By observation, r < R

"g" in Equator:-

g′ = GM/R²

"g" in Poles:-

g″= GM/r²

⇒ g″ > g′.

Or, acceleration due to gravity increases from equator to the poles.