Is the gravity at the center of the earth zero or greater than at the eatrh's surface?.?

Answer 1

The centre of the earth is called CORE. Earth is like a big magnet as close u go to the magnet the magnetic power increases. So at the centre of the earth the gravity is maximum.

Simple if we go up the gravity decreases and it inreases as we go down.


Neo

Answer 2

Gravity is caused by the mass of an object, and the strength depends on the distance you are from it. The larger the mass the more the gravitational pull, and the closer you are the greater the pull. So when you are on the surface of the earth the whole mass of the earth is right below you. And you are as close to it as you can get. Thus gravity is at it's strongest point.

If you moved away from the earth the pull of gravity will decrease.

And if you moved down into the earth you now have some of the mass of the earth below you AND above you. So the mass above you would tend to cancel out some of the gravity of the mass below you, Because it is now pulling UP on you.

Thus the gravity will become less and less as you get deeper in the earth. And when you get to the center of the earth you have equal amounts of mass on all sides of you. So that while there is still gravity pulling on you. it is pulling equally in all directions. Then net effect being that you will feel as if there is no gravity at all!

You would not feel any gravity at all in the center of the earth, it would be as if you were weightless and floating in space.
So you could say the gravity there would be zero.

Answer 3

Newtons law of gravitation states that F=GmM/r^2
where F is force due to gravity, G is the universal gravitation constant, m and M are the masses of the two objects exerting gravitational force on each other and r is the distence between the objects. To find the gravitational force at the center of the Earth you would have to add up the forces from each small bit of Earth as the radius increases (essentially integrate over the radius) because in this problem, the Earth cannot be treated as a point mass. If you assume the Earth is a sphere of uniform density, the the forces from all the little pieces of earth would calcel each other out so the gravitational force between you and the Earth would be zero.

Answer 4

The gravitational pull due to the earth would be zero at the center of the earth.
Note: You will still experience gravitational pull from other heavenly bodies - e.g. the Sun

Gravity is the force of attraction between matter. When you stand on the earth's surface, the center of earth attracts you with a particular force (i.e. your weight) - you attract the center of the earth with the same force. The center of the earth is just a convenient way of representing all attraction due to the earth. In reality all particles on earth attract you - i.e. the force from the ground directly beneath you as well as from the force from the himalayas can all neatly be represented as a force from the center of the earth

That's why when you are at the center of the earth, every particle on earth will attract you towards itself - but since you are at the center of the earth, every paricle will be pulling you away from the center towards itself - the net result being all the attractive forces in all the different directions cancelling out and resulting in a net zero weight or net zero gravity

Obviously you would need very sound heat resistant protective gear to prevent yourself getting melted/burnt should you undertake such a trip :)

Answer 5

it is in reality 0, and the reason being exciting: it has to do with a splash bit arithmetic called Gauss's regulation. think a properly that reaches to the middle of the earth. At any element in the properly, the degree of the gravitational tension is given by utilising the mass of the earth below the element in question: all the mass above that element, no count if on an identical area of the earth, the different area, or someplace in between, cancels out. So, as you descend the properly, the strain of gravity decreases very nearly linearly with increasing intensity, attaining 0 on the middle. (it may well be precisely linear if the earth's density have been consistent with intensity, in spite of the indisputable fact that it is not.) Gauss's regulation says that the full flux from any source equals the full flux passing via any floor surrounding the source. it is frequently utilized to electrostatics, in spite of the indisputable fact that it applies to gravity to boot.

Answer 6

Gravity due to the Earth at the center of the Earth sums to 0, if the Earth were uniform. Think of yourself in a hollow shell standing at the center (then keep adding shells till the volume fills up). Thus the sum of the gravitational attraction of the Earth would be greatest where the derivative of the gravitational force f=G(M1)(M(r)Earth)/r^2 is a minimum.

Answer 7

There is always gravity.

Always, always, always.

At the center of the earth, the net of the gravitational forces will be close to zero. But not quite zero. The moon, sun, and every other object in the universe exert tiny gravitational forces which are not cancelled out.

Yes -- it's small enough to be negligible. But remember that gravity is always there.

Answer 8

It is greater at the earth's core than on the surface. The acceleration due to gravity in Denver,CO (1600m above sea level) is about 9.7 m/(s^2), but over 9.8 m/(s^2) at sea level. Since continuing towards the center of the earth is going in the same direction, the trend of increase is maintained.

Answer 9

I think it really depends on whether you believe Newton or Einstein. I think Einstein's theory makes more sense--that there is no actual "force of gravity", but rather that objects of great mass bend space/time so that we are held down to the earth, the earth is held to it's orbit, the solar system is held in the arm of the galaxy, etc.

By that interpretation there is neither gravity at the center of the earth nor, really, on it's surface.

Answer 10

If you find yourself at various depths between the surface & the center, as you approach the center, the less mass there is closer to the center. Thus, as you find yourself exactly at the center, all of Earth\'s mass is surrounding you. Its cumulative gravitational potential becomes zero at that location.