Why is the value of g more at the poles than | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The acceleration due to gravity is given by the formula $g = \frac{GM}{R^2}$,where $G$ is the gravitational constant,$M$ is the mass of the Earth,

Vedclass · Accepted Answer

The Earth is flattened at the poles and bulges at the equator.

Vedclass · Answer

(B) The acceleration due to gravity is given by the formula $g = \frac{GM}{R^2}$,where $G$ is the gravitational constant,$M$ is the mass of the Earth,and $R$ is the distance from the center of the Earth.Since the Earth is not a perfect sphere but is flattened at the poles and bulges at the equator,the radius $R$ at the poles is less than the radius $R$ at the equator.Because $g$ is inversely proportional to the square of the radius $(g \propto \frac{1}{R^2})$,a smaller radius at the poles results in a higher value of $g$ compared to the equator.

Why is the value of $g$ more at the poles than at the equator?

Similar Questions

What is the ratio of the gravitational force between two masses kept at a certain distance in air to the force between them when kept in any other medium?

The gravitational force between two objects is $F$. How will this force change when:
$(i)$ the distance between them is reduced to half?
$(ii)$ the mass of one of the objects becomes four times?

State whether the following statement is True or False:
The value of $G$ depends upon the mass of two objects.

$A$ stone is dropped from a cliff. Its speed after it has fallen $100 \,m$ is: (in $, m s^{-1}$)

State whether the following statement is true or false:
The force of attraction between two bodies is called gravity.

Vedclass Test Series

Exam Paper Generator

Online Exam Module