hello, what happen to anything that goes to the central of the earth, does it become no gravity like space?

Answer 1

anything that goes to the centre of the earth through a straight hole through the core executes simple harmonic motion about the centre theoretically. but practically the substance is bound to be destroyed by the extreme heat.

Answer 2

Well, technically space has gravity, just so you know.

Now, we have to make a few assumptions to make this thought exercise interesting. Most importantly, I assume you can freely move through the Earth. We ignore most geological issues, such as the core, and assume you can drill a hole or something to travel through.

Anyway, at the center of the earth, the pull of gravity from every atom that makes up the earth cancels each other out (kind of like two people of equal strength pulling you, one person per arm, so you don't go anywhere), so yes, there will approximately be no gravity there.

Mathematically, you'd have to integrate the effect of every point on the earth. It's a spherical integral over the entire volume of the sphere. The math isn't so bad, but it's hard to type up, so I won't go into unnecessariy details.

Here's an interesting thought. What if you drilled a straight hole from here to China or something. It'll have to be a straight hole, not winding, and it will have to cut through the center of the earth. It is mathematically possible to prove that if you jumped into it, you'd fall all the way through and reach zero velocity right when you get to the toehr side. You'd then fall back to where you start, and the process will repeat. You'd oscillate forever. You have no velocity but high force at the ends of the hole, and high velocity but no force at the center of hte hole, since the only possible force was gravity.

Answer 3

If you were just hanging out in the center of the earth, you would be pulled in all directions (roughly) equally. By this, I don't mean that the forces would pop your head off in one direction and your feet in another. Every particle in your body would be pulled in all directions equally. You wouldn't notice the effects. You would, essentially, feel "weightless".

Of course, you'd die long before you ever got there. :p

Answer 4

The deeper you move into Earth, the higher pressures you encounter. The pressure at the inner core is so high that it raises the melting point of iron, keeping it solid. So being subject to all that pressure would rather be like the opposite of being subjected to no gravity/weightlessness.