Question

A body is weighed at the poles and then at the equator. The weight.

• A. at the equator will be greater than at the poles
• B. at the poles will be greater than at the equator
• C. at the poles will be equal to the weight at the equator
• D. depends upon the shape of the object

Answer 1

Answer: (A)

at the equator will be greater than at the poles

$Answer:-$ A

Value of g at any point on surface of earth is given by:-

$g^{\prime }=g-{\omega }^{2}R\cos \phi Atequatorcos\phi =1So,g^{\prime }=g-{\omega }^{2}R$

Value of $\cos \phi <1$ at every point other than equator.

So, $g^{\prime }$ will be more at any point other than equator relative to equator.

At poles maximum value of $g$ is observed as $cos\phi =0$.