Question

Scientific reasons: Why the weight of an object at the equator is less than at the
poles?​

Answer 1

Explanation:

The equator is moving quickly as the earth's spins, so it has a lot of centrifugal force. In contrast, the poles are not spinning at all, so they have zero centrifugal force. ... Since there is more centrifugal force at the equator to cancel gravity, your overall weight at the equator versus at the poles is even less.

Answer 2

Answer:

We do, although you'd barely notice. There are two effects, both due to the spin of the Earth. 'Centrifugal force' due to the spinning lowers your body weight by about 0.4 per cent at the equator relative to its weight at the poles. The Earth's spin also causes the planet to bulge, so that at the equator you're about 21km further from the Earth's centre of gravity and so weigh around 0.1 per cent less. Overall you'd weigh around 0.5 per cent less - about a third of a kilo for most of us.Centrifugal force' due to the spinning lowers your body weight by about 0.4 per cent at the equator relative to its weight at the poles. The Earth's spin also causes the planet to bulge, so that at the equator you're about 21km further from the Earth's centre of gravity and so weigh around 0.1 per cent less.