why is the value of g is greater at the poles than at the equator
Answers
Answer:
The length from the poles to the center of the earth is smaller than the distance from the equator to the earth's center. Therefore the acceleration due to gravity is more significant at the poles than at the equator.
Explanation:
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Answer:
The value of g is greater at the poles as the distance from the center of the earth to the poles is lesser than the distance from the center of the earth to the surface at the equator.
Explanation:
The acceleration due to gravity (g) on the surface of the earth can be found using the following equation:
g = GM/R²
Where 'G' is the universal gravitational constant, 'M' and 'R' are the mass and radius of the earth respectively.
But the radius of the earth is not the same at the equator and the poles. Because the earth is not a perfect sphere. It has bulged at its center. So the radius of the earth is greater at its equator than at its poles.
From the equation of acceleration due to gravity, it is clear that as the radius increases the value of g will decrease and vice versa. So the value of g will be greater at the poles than at the equator as the radius at the equator is higher than at the poles.