Ok then, what happens if you make a tunnel through the earth, and you jump in it? (lets say you WONT be crushed by gravity/fear/speed)
This is what i think. First, you jump. Nothing strange happens (you feel like falling next to a 90 degree surface) until you are in the middle of the earth. there, as you fall, your internal ear will try to make some kind of equilibration between the gravity and your speed (starting with the earth's middle, the surface next to you that appeared next to you will become smoother continuous until it becomes a plane 0 degree surface. you lose a degree every 133,(3) kilometers(used dah computer)). The problem is that in the point where the surface is 0 degree you had just passed through 3/4 the earth, and you have like 12000 kilometers to pass by leg. But it is simply impossible to pass them, because the more walk, the surface becomes more abrupt, to the point it is too abrupt for a man to pass, making you fall.
So the answer to (Can a man go threw the Earth to reach its opposite side?) Is...no!, and he couldn't return either, being trapped in the earth
you have ALL the time in the world to understand this. i, for example, wrote this in five minutes, then stood another five minutes to understand what the fuck i wrote, but now it seems simple. Let me explain it to you. You cannot fall up, just down. but you see, to reach the surface you MUST fall upwards at least once, which is impossible. Man in the middle of the earth, you got pwned by yourself!
I'm not sure of the parameters held constant in this hypothetical. Is it a question of geometry or does it have some reference to physics? Because if it's the former then obviously it's possible to draw a line that bisects a circle hence passing through its radius, but if it has any reference to physics, there's no knowledge on how the inner-ear would react to such reference points because...well...gravitational force would have to be taken into account.
A better way to think about this would be to think about the confusing question of reference points, which you've done geometrically, but which would be better to think about gravitationally. Newton's formula for graviational force is this:
F = G*M1*M2/d^2
As you can see, this formula doesn't say anything about the direction of the force, only its magnitude. This is because you're as attracted to the Earth as it is attracted to you. It just happens to be about 10^23 times heavier than you. Note that distance here actually means "from the center of gravity of the object".
This brings up the question of what that actually means. If you try to dig your way to the center of the earth, your reference point will change relative to the gravitational pull of the Earth, right? Or would it?
thanks for that. I just said what i think. If you take a points in the middle of a thing, that point should have the highest gravity magnitude. I also think that while being in the earths center, a human would experiment gravity from all directions, so he could stay there in any position he would want. But with this topic i actually wanted to explain that in you make a hole in the hearth and throw someone in the hole, there is NO WAY for him to escape
the deeper you go below the earth the more powerful its graity is. I'm just sayin xP
That is only because deeper down in the earth it is more compacted and therefore has a greater gravitational pull...
Did you know that if the sun turned into a black hole and theoretically we still survived, we would still orbit around it even though it would be smaller than Earth.
That is only because deeper down in the earth it is more compacted and therefore has a greater gravitational pull...
I know :P
Did you know that if the sun turned into a black hole and theoretically we still survived, we would still orbit around it even though it would be smaller than Earth.
how would we survive again? why would we still orbit if there is gravity from the sun?
