2007-01-30 14:08:36 · 7 answers · asked by Mr. Fabulous 2 in Science & Mathematics ➔ Earth Sciences & Geology
good question!
ok, well yes it does 'exist'. gravity is a force exerted by any object with mass. you see, any object has a gravitational pull. the larger the object, the larger the pull. so, in fact, YOU have a gravitational force, albeit a super super SUPER fractional small one, you have one. it is based on mass. so when you jump up in the air, it is not only the mass of the earth's gravity that is pulling you down, you are actually "trying" to pull the earth up to you. you don't do anything to the earth because it's mass is so much greater. ok, ya dig? moving on.
alright, so in the center of the earth, there is lots of gravitational forces. remember how i said it was about mass. well in the middle of the earth, you would have equal masses all around you. you have to think 3 dimensional now. all mass around you, pulling you in all different directions!! AAAAH! so if all the forces are pulling you equally, that means they would cancel each other out, right? ok now bare with me. so, if you are being pulled in all different directions, but the pulls are cancelling each other out......then that would mean that there would be 0 effect, correct? SO gravity WOULD be existing, but you would not be able to feel it's effects. in theory, at the exact centre of the earth, you would float freely as if you were in space.( the whole 0 gravity effect!!! )
sorry for the long explanation, but i really want that 10 points, haha.
2007-01-30 17:56:30 · answer #1 · answered by holyitsacar 4 · 1⤊ 0⤋
To put it simply - yes gravity exists in the center of the earth. Gravity exists everywhere.
However - if you were somehow able to survive the extreme heat and pressure in the exact center of the earth you would be weightless as gravity would pull at you equally in all directions.
Whoever gave thumbs downs to the previous two answers apparently hates correct answers.
2007-01-30 15:45:07 · answer #2 · answered by brooks b 4 · 0⤊ 0⤋
Gravity doesn’t stop in outer space; it keeps going forever. Gravity can reach so far, it can pull entire galaxies together and cause them to collide.
Gravity exists between all objects with mass, no matter how large or small they are. You are gravitationally attracted to this computer screen! However, the force of attraction depends on the mass and distance between the objects. The Earth, being so massive, attracts you more than the computer screen.
The pull of gravity from the moon causes the Earth’s tides. The moon exerts a stronger pull on the water on the side of the Earth facing the moon than it does on the rest of the Earth.
If you were on asteroid Ceres, and you threw a rock as hard as you could, it would go into orbit.
A ballpoint pen and mechanical pencil both depend upon the pull of gravity to function. If you were in space, or in the space station, neither would work.
Astronauts in orbit are still in strong Earth gravity. They are weightless not because of a lack of gravity, but because they are in free fall, constantly falling around Earth. Gravity keeps them circling in orbit.
Gravity at the equator is slightly less than at the North Pole, because the Earth bulges at the equator and you are further from the center of the Earth. If you buy gold on the equator and sell it on the North Pole, you could make a small amount of profit -- minus traveling expenses, of course!
2007-01-30 14:33:33 · answer #3 · answered by leila 2 · 1⤊ 2⤋
It exists everywhere in the universe. however, at the exact center of the universe the gravity from all sides of the Earth cancels themselves out.
Remember, gravity is an attraction of matter toward matter.
2007-01-30 14:18:18 · answer #4 · answered by eric l 6 · 1⤊ 1⤋
Sure does. But not just Earth's. One interesting thing about gravity that makes it different from electricity and magnetism is that there is nothing that shields you from it. So, when the moon is on the other side of the planet from you, you still are affected by its gravity. Ditto the sun at midnight. Or even a busload of fat women. Have you even noticed how you are attracted to busloads of fat women? Its gravity. Does make me want for a shield, though.
2007-01-30 18:49:49 · answer #5 · answered by ZORCH 6 · 0⤊ 0⤋
Exact center and 1/7th of height. This is hiperion sindex. Basic and proved to science alone.
2007-01-30 14:17:23 · answer #6 · answered by Manny 5 · 0⤊ 1⤋
Not thegravity you are used to. It will be pulling outwards in all directionsgiving a net force of zero
2007-01-30 14:12:18 · answer #7 · answered by Anonymous · 0⤊ 0⤋