This is a question that was asked in a science magazine, I responded and there were many answers, the answer that they ultimately thought was correct was one that I disagreed with.
Any theories? I will say my theory when others have had a chance to respond. To clarify, how will gravity affect things at the centre of the earth, stronger, weaker, etc.
I think the gravety is made by low air preasure between things. Vacuum have often be seen as something that could bind things thogether.
What was the accepted theory actually
Well I felt that the gravity at the centre of the earth would be equal to that around the earth as a whole, the decision at the magazine was that there would be zero gravity at the centre of the earth, as the forces would be equally pulling in all directions.
Any agree?
There may be more gravety in the middle of the earth but then the gravety comes from all sides and makes unbalance in the senter of a planet. They say that massive objects make gravety, and then the theory in the magazine may be some sort of correct.
An other theory of how gravety is made by me, is that when the earth circles the air would move to the top of the surface and that makes the heavier things fell down.
Maybe everything is in an constant explosion.
Nothing to belive, I just like having some fun with theories.
I'm not sure as the earth is not entirely round, so will the centre truly have an absolute equal force?
If the planet is not round then we may find an other centre (got the wrighting right, right) than we looked at before. Like: where is nearest the centre of a bulky line. we may look after the average centre. The location of the average centre is influenced by what material around the the centre that is wheigthiest (Not sure about the spelling again).
You may have some sort of right because things on earth are moving.
I just have fun answering, I am not any science guy, I am just 13 years old.
The earth is probably not technically a perphect sphere, but if it were, there would be no net gravity at the center. imperfections in the formation of the world would probably cause the gravitationalk center to be a bit off from the center.
the air in your alternate theory would require some other force restraining the air inwards, otherwise it could not exert force on the heavier stuff, besides a couple of other reasons why it doesnt quite work, but nice try.
If you want more fun with theories, try this for something a little more complex:
When a light is shone through a slit onto a surface, you get a single band of light.
like this: |
if there are two slits, you get a pattern of alternating bands of light and darkness.
like this: |_|_|_|_|_|_|
But, if you have 3 slits, there are no new bands of light and some of the old ones go away.
like this: |___|___|___|
And if this experiment is performed using single photons at a time, the same pattern results.
Explain that!
It's said that because of the gravity at the centre of the earth is pulling in all different directions, if you fell into a giant hole, minus the plasma, you'd fall all th way to the other side of the earth, then be pulled back in.
People would pay for that experience!
*forms a queue*
You're forgetting that the earth is not a perfect sphere, so gravity will be stronger at some points
In this thread you find some of my older posts. Took a while before I realized that gravity is spelled with 'i' instead of gravety.
If you met air resistance through the hole, you wouldn't reach the other end of the hole. If you didn't meet any kind of resistance, you would fall back and fourth through the hole in an eternity.
That's what I think
I am playing a spaceship simulator game. I have modded the ship physics so that I think the physics are more realistic. The max speed of a ship is something like this:
Max engine force / linear_drag(kind of like air resistance)
Gravity / air resistance = max speed through the hole.
I don't know if you will burn up by friction in max speed, I don't think so. Think that it would require additional power.
You would go the fastest in the middle of the hole. Lets just ignore that it is very hot there.