From where earth's gravity starts?

Question

If we make a hole in ground and jump in it means you will reach its bottom surface because of gravity... WHAT WILL HAPPEN IF YOU JUMP IN THE HOLE MADE IN EARTH WHICH REACHES NEXT END... LIKE DRILLED FORM INDIA WILL REACHES US... COULD YOU REACH US??????

Hi guys i know no one can withstand the core temperature... Just a assume that we could overcome that heat...
Else just take a spear magnet as example. It can attract all iron particles in its side. But if we make a hole nothing sticks it into its centre... will it happens same to out earth????

Answer 1

If you had a tunnel through the exact center of the earth and disregarding that the heat would melt anything you were in and you, also disregarding things such as air resistance, you would fall to the center. Your momentum would then carry you out the end of the tunnel where you would fly up away from surface to a height just a bit less than height you jumped into hole from. The measuring point for you would be your center of mass. Then you would fall slightly less distance each time through hole until you stopped at center of the earth where you would somehow have to climb out. You would not bump into sides on the way down until passed the center on the way up cause you'd be jumping in with same speed as the earth's rotation. You would actually fall in an arc, sort of like dropping a rock from your hand as you hold it out the window of a moving car. The rock does not fall straight down, it arcs along for a bit with the car until air resistance and gravity take over. From a perspective of someone out in outer space, you would arc in your fall too. But since the earth would spin into you once you got beyond the center point, you would bounce around a bit on the way up.

Answer 2

First, gravity in a sphere (the earth is nearly a sphere) is directed towsrd the center of the sphere. "Theoretically" (see below) you could travel through the earth to the other side by jumping in a hole *only if* the hole was straight and went directly through the center of the earth. There is also the problem of the earth's rotation. so to make this work you would need a hole running straight through the earth from the north pole to the south pole.

Now, the reason that won't *really* work is something called friction (or wind resistance, if you prefer). The air slows you down as you fall in much the same way as water slows you down when you dive. So if you did jump into such a hole, friction would slow you enough that you would not reach the surface of the planet on the other side. What would happen is that you would reach a point short of the surface and then fall toward the center of the earth again. After several falls - each shorter than the last - you would be stuck at the center of the earth, where you would be totally weightless.

I hope you've got a big shovel.

Jim

Answer 3

If a hole is made through the centre of the Earth, neglecting the core temperature (though it is practically impossible, because the temp. of the earth's core is about some thousand degree Celsius), and then if one jumps in one side , he must reach another side of the cylindrical path(considering there is no friction).Further if the person is not subjected to stop he will again start moving for another side of the hole, resulting a continuous motion from one side of the hole to another.Because gravity starts from just apart from the centre of the Earth ..but at centre gravity is zero(0) and is maximum on surface, that is why the person will reach just up to the surface;will not go away.His speed increase up to the centre in a constant rate of increasing and then from centre to surface his speed decrease at the same rate as it was during increasing.Both the increasing & decreasing rates are same, also both the distance are same and if he start with no initial velosity then he must stop at opposite side....and then again will start...THEORYTICALLY

Answer 4

The outer core, which is a molten liquid (metallic iron), generates Earth's magnetic field.

The center of the earth lies 4,000 miles beneath our feet, but the deepest that it's ever been possible to drill to make direct measurements of temperature is only 6 miles b/c currently, we don't have the technology to go to the core. So, temperatures at the core are estimated to be about 7,000-12,000 degrees F, & the pressure is more than 3 million times atmospheric pressure.

So, if somebody were to somehow jump into a hole to the center of the earth, they'd be crushed & melt long before ever reaching it.

Answer 5

In more coherent English, you ask that if you could drill a hole through the center of the earth to the other side, and jumped in the hole, what would happen to your speed and displacement? Actually, results are different in air than in a vacuum. In a vacuum, you continue to acclerate at 9.8 m/sec^2 until you get to a point where there is appreciably more earth that you have past compared to that which is ahead of you, and then the accleration starts dropping. In reality, you reach a velocity of about 350 km/hr.

Answer 6

well, realistically, you would melt in the liquid rock at the core if you even got that far. But it's an interesting question in theory. What if there was a person in India and a person in the US and they both jumped in opposite ends of the hole at the same time? They wouldn't pass each other in the center and continue going until he would fly OUT of the hole the other person just jumped into.
Since gravity is a function of the mass of the earth, I suppose we can walk ontop of it because there is so much earth below our feet. But if we were in the core, there would be roughly equal amounts of earth's mass all around us, so maybe we would float around in the "limbo of the core" as the other guy said.
Thakns for giving me something to think about!.

Answer 7

If you jumped in, you would accelerate up to about 150 miles per hour. Air resistance would keep you from falling quickly. As you got closer to the center, gravity would drop off to zero. Your terminal velocity in the air would also drop to zero. Eventually, you would be left floating in the center of the Earth.

However, if there was no air in the tube, you would accelerate to a very high speed, reach the center of the Earth very quickly, and fly out the other side.

Additionally, the rotation of the Earth would cause you to run into the sides of the tube, unless the tube was drilled from the north pole to the south pole. (See the Foucault pendulum for an explanation of this).

Answer 8

The earth is hollow and does not have a core, At least not in the center. No one in the scientific community has yet offered any help with testing and calculations and maybe a previous idea that openings to this hollow existed at the poles where the outer shell would be thinner however I do not see this as being accurate. To answer your question as you reached the point of gravitational equilibrum you would need a type of push to continue because up would be opposite 180 degrees whether went on to the hollow or returned to the surface.

Answer 9

Im pretty sure this can be solved by equating that no one could survive super heated magma.... and if you did, by chance, miracuoulsly fly through the center of the earth onto the other side through a hole... what the hell would stop you from shooting off into space. Anything that might stop you at that speed would kill you. Unless gravity started to slow you down from the core up... but I doubt it.

Answer 10

Gravity of earth as assumed is relative to the ambience this is why water is declared to resting on the floor of the earth. In absolute words, the type of water physique is already floating interior the area above us, particularly interior the type of vapour and air. it is the chemical technique and reaction to earth's nearest floor that water such formed is seen as a liquid factor.