Which of the following statements is true?

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(D) The centrifugal force due to the rotation of the Earth is maximum at the equator and zero at the poles. Consequently,the effective acceleration du

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$g$ is greater at the poles than at the equator.

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(D) The centrifugal force due to the rotation of the Earth is maximum at the equator and zero at the poles. Consequently,the effective acceleration due to gravity $(g)$ is minimum at the equator and maximum at the poles.The value of acceleration due to gravity at a height $h$ is given by $g_h = g(1 - 2h/R)$ and at a depth $d$ is given by $g_d = g(1 - d/R)$.Since both $g_h$ and $g_d$ are less than the value of $g$ at the surface,the value of $g$ is maximum at the Earth's surface compared to any height above or depth below it.Therefore,the statement that $g$ is greater at the poles than at the equator is correct.

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