Question

if the speed of the earth is 1640 at the equator decreasing at the poles then how its possible that gravity is maximum at the poles​

Answer 1

There are mainly three factors which contribute to the maximum gravity at pole and minimum at equator:

Radius of equator : As Earth is flattened at the pole , radius of the equator is greater than radius of the pole. Since gravity is inversely proportional to the radius. This factor reduces the net gravity at equator compared to the pole.

Centrifugal force: At equator centrifugal force acts outward i.e opposite to the direction of force of gravity which acts towards the center of the Earth. Thus again, reducing the gravity at equator. However, centrifugal force at the pole is zero.

Mass: As Earth has more mass at equator (larger radius of equator compared to pole) , this particular factor increases the gravity at equator.

Hence, the first two factor has larger contribution to the overall gravity. Thus, we have minimum gravity at equator and maximum at the pole.

Answer 2

Answer:it is because the lesser the momentum , magnitude or aceelaration the more the effect of gravity increases . this also proves why the sun cannot pull earth towards it as earth moves at avery high constant speed

Explanation: