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Question

A body weighs 2 kgf at equator. It's weight at the poles will be less than 2kgf or more

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Solution

As you might be familiar with the Newton’s law of Gravitation, which clearly states that Gravitational force is directly proportional to the product of the two masses and inversely proportional to the square of the distance between them. And the gravitational force is nothing but the weight of the body.

The thing is that, the distance between the surface of the Earth on the Equator to the centre of the Earth is more than the distance between the surface on the Earth in either of the poles to the centre of the Earth.

Since in the first case, the distance is greater, the gravitational force is smaller, following the Inverse Square Law. In the second case, the distance is smaller, so the gravitational force, a.k.a. weight, is larger.

then the weight of a person increass when he goes from the eauator to the pole of earth.

so the weight at poles will be more than that of eauator


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