Why is the value “g” not the same at all places on the earth? please answer fast.
Answers
No, the value of g is different at different places on the surface of earth. ... Due to which the radius of the earth is smaller at poles and is larger at equator. Since g is directly proportional to 1/R2. therefore the acceleration due to gravity is smaller at equator than that at poles.
It is important to distinguish between G and g. They mean to different things in Physics. G is the Universal Constant for Gravity. As that name implies, G is in fact the same anywhere in the Universe.
On the other hand, g (“acceleration due to Gravity”) varies from place to place. In fact, g varies throughout your daily life, if only slightly. This is largely because g depends on your distance from the center of the Earth. Technically, if your mass changes it would change the equation, but your mass is insignificant compared to that of the Earth, so really your position relative to the center of the Earth would have more effect on your observed g. The further you go from the center of the Earth, the lower g would be — and vice versa. In Death Valley, g is greater than on the summit of Everest.
Additionally, because Earth is not a sphere, but an oblate spheroid, g is higher in Antarctica or Greenland than if you are standing on the equator. This is because the earth's radius is greater at the equator compared to the poles.