Question

As we go from the equator to the poles, the value of $g$ ________.

• A. Remains constant
• B. Increases
• C. Decreases
• D. Decreases up to the latitude of ${45}^{°}$

Answer 1

The correct option is B

Increases

1. The value of $g$ depends on the radius of the earth.
2. The value of $g$ is inversely proportional to the radius of the earth.
3. The equatorial radius is $21km$ more than the poles.
4. $g=\frac{Gm}{r^2}$ [Where, $m$ is the mass, $r$ is the radius, $G$ is the universal gravitational constant, $g$ is the acceleration due to gravity at the earth's surface.]
5. Therefore, the value of $g$ increases as we go from the equator to the poles.

Hence, the correct option is $\left(B\right)$.