Question

The gravitational force with which a body is attracted towards the earth is?

• A. The same at all the places on earth's surface
• B. Minimum at the equator and maximum at the poles
• C. Maximum at the equator and minimum at the poles
• D. Independent of the place on the earth's surface

Answer 1

The correct option is B Minimum at the equator and maximum at the poles

Gravitational force with which a body is attracted towards earth is minimum at equator and maximum at poles because there are factor.

1) Radius of equator As earth is flattered at the pole, radius of the equator is greater than radius of the pole. Since gravity if inversely proportional to the radius. The factor reduces not gravity at equator compared to poles.

2) Centrifugal force - at equator centrifugal force acts outward opposite to direction of force of gravity which acts center of the earth. Thus again reducing gravity at center centrifugal force at pole is zero.

3) Mass - As Earth has more mass at equator, Particular force increases gravity at equator.