The weight of a body on Earth is greatest at the poles. This is mainly due to the shape and rotation of the Earth. The Earth is not a perfect sphere but rather an oblate spheroid, meaning it is slightly flattened at the poles and bulging at the equator. Therefore, the distance from the center of the Earth to the surface is shorter at the poles than at the equator.

Gravitational force also differs a little with location on the Earth’s surface. At the poles, the gravitational pull is a little stronger than at the equator because of this reduced distance from the Earth’s center. Thus, an object weighs more at the poles than at any other location on the Earth’s surface.

Other determinants of weight include altitude and Earth’s rotation. For instance, the farther from the Earth’s center, the smaller the weight, and thus higher altitudes would mean lesser weights. Likewise, Earth’s rotation results in a centrifugal force that also minimizes weight at the equator. Still, in the presence of these factors, the poles remain the best places for obtaining maximum weight on any given body due to a combination of the forces of gravitation and distance from the center of the Earth.

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