Question

The value of $\mathrm{g}$ at pole is :

• A. greater than the value at the equator
• B. less than the value at the equator
• C. equal to the value of the equator
• D. none of these

Answer 1

The correct option is A

greater than the value at the equator

Explanation

1. Earth is not a perfect sphere. It is flattened at the poles and bulged at the equator.
2. The centrifugal force caused by the rotation of the earth results in the bulge of the earth at the equator.
3. We know that the gravitational force is inversely proportional to the square of the distance from the center of the earth.
4. The distance from the poles to the center of the earth is lesser than the distance from the equator to the center of the earth.
5. Therefore, gravitational acceleration is greater at the poles than at the equator.

Hence, the correct option is (A).