Question

explain why the value of g is zero at the centre of the earth​

Answer 1

Answer:

Acceleration due to the earth's gravity is zero at the centre of the Earth because at that point the mass of the earth is equally distributed in all directions, so pulling equally in all directions for a net zero pull. As the distance from the centre decreases, the acceleration due to gravity also decreases.

plzzz mark the answer brainliest! ! !

Answer 2

$\large\boxed{\fcolorbox{blue}{yellow} {Answer}}$

At the centre of the Earth, the force due to upper half of the earth will cancel the force due to the lower half.

In the similar manner, force due to any portion of the Earth at the centre will be cancelled due to the portion opposite to it. Thus, the gravitational force at the centre on any body will be 0. Since, from Newton's law, we know

F = mg

Since, mass m of any object can never be 0. Therefore, when F = 0, g has to be 0. Thus, the value of g is zero at the centre of Earth.

$\large\boxed{\fcolorbox{blue}{yellow} {Additional Information }}$

Newton's law of Gravitation :-

According to this theory, every object in the universe attracts the other object with a definite force. This force is directly proportional to the product of the masses of the two objects and is inversely proportional to the square of the distance between them.

The formula for Gravitational force :-

F

$\alpha \: \frac{m1m2}{ {d}^{2} }$

Where G is the Universal Gravitational Constant.

Acceleration due to gravity (g) :-

The acceleration produced in a body due to the earth's gravitational force is known as acceleration due to gravity.

Mass :-

The mass of an object is the amount of matter present in the object.

The mass can never be zero.

It remains always constant for any place and any object.

Hope it helps!