Question

How does the acceleration due to gravity vary from place to place on the surface of the earth?​

Answer 1

Answer:

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Answer 2

Actually the Earth isn't a sphere it's more flat around the poles and more curved around the equator.

so what happens is that at the poles(north and south) the distance from the center of the Earth is smaller compared to distance from the equator.

now it so happens that acceleration due to gravity g=GM/r² here G is gravitional constant and M is mass of Earth and r is Earth's radius.

so since radius is lesser at the poles then acceleration due to gravity(g) has more magnitude as compared the the equator.

but that difference is nothing as compared to the actual radius of the Earth so we can safely assume that acceleration due to gravity (g) is 9.8m/s² everywhere on Earth.

it's not as accurate but it's a fair approximation.