Question

Is there any difference between the value of ‘g’ at the equator and at the poles”
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Answer 1

Explanation:

As the shape of thie carth is not perfect sphere but elliptical. The distance at fl e+ quar to the center of earth is more, so gravitational acceleration ‘g’ at cquator will be less.

However, as the distance at the poles to the center of the earth is less, so gravitation acceleration ‘g’ will be more.

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Answer 2

$\mathfrak{\huge{\blue{\underline{\underline{AnswEr :}}}}}$

The value of g is inversely proportional to square of the radius of the earth

❖ g = $\large\frac{GM}{r^{2}}$

Here

G = Universal gravitation constant

M = Mass of earth

r = Radius of earth

As we know earth is not a perfect sphere but an oblate spheroid in shape, it's radius is greater at equator than it's value at the poles.

At the poles it is 9.832m/s²

$\large\boxed{\red{At\:the\:equator \:it\:is\:9.780m/s^{2}.}}$

we can use this formula

g${(\beta)}$ = g − ш²(Rcos${\beta}$)

Here

g${(\beta)}$ = acceleration due to gravity at a latitude ${\beta}$

g = 9.832m/s²

ш = Angular speed of the earth.

R = Radius of the earth.