how is the force of gravity the same at the equator and the poles?

Question

If the rotation of the earth is fast enough to have an effect on gravity, why isn’t gravity stronger at the poles (lower rotational speed) and weaker at the equator (faster rotational speed?)

In: Physics

Answer 1

You *do* weigh less at the equator as a result of 1. higher centrifugal force and 2. higher distance from the earth’s center of mass (due to the earth not being a perfect sphere). Both effects are miniscule and, for all practical intents and purposes, don’t matter at all.