Question

why gravity is zero in the earth of middle​

Answer 1

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Yes, the gravitational force at the earth’s center is zero.

Here is the explanation:-

The further you go away from earth, lesser the gravitational force you experience. And closer you come to the surface of earth, more gravitational force acts on you. This is because of the inverse square law.

But as you keep on moving towards the center of the earth, the gravitational force acting, by the virtue of earth’s mass, on you will gradually abate and ultimately go zero once you reach the earth’s center. Not because there is no gravitational force down there but because at the center you will be completely surrounded or enveloped by earth, as a result you will be pulled by equal forces in all directions. Hence all the gravitational force lines will cancel out each other leaving you with zero net force.

So apparently you won’t feel any gravitational force down there at the center.

Answer 2

Answer:

Gravitational force pulps things toward the centre of the earth. As we go higher and higher up ,the gravitational force gets weaker ...At the very centre, the gravitational force is zero because there is equal mass pulling on you from all sides ,and it all cancels.

Explanation:

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