what would happen if you make a hole in the earth from top to bottom and throw yourself where would you land?
351770
If your hole is nice and air-conditioned, and you don't have to worry about incinerating in the heat of the Earth's core, then you would free fall until you got near the center, at which time you would gradually slow down due to the gravitational pull of the larger mass behind you. It's the mass of the Earth that holds you down to the ground. If you were in the dead center of it you would feel weightless because the mass would be pulling you in all directions equally. So you are heading for the other side, your velocity slowing until you would come to a stop somewhere near the surface, and then fall back into the hole going the other way, and once again slowing to a stop at the other end, repeatedly falling back and forth until air resistance brought you to a complete stop in the center, just like a swaying pendulum.
1112306
Well, I appreciate the fact that you include a waiver for many of the things that would make this task impossible, that helps a lot ;)\n\nIf some explorer were able to dig a hole straight through the center of the earth, the digger would slowly find the apparent effects of gravity decreasing as he or she approaches the center.  On the surface of the earth we feel a good, solid 1G because we have this huge mass effectively "underneath" us but our explorer would slowly be working his way down until only a portion of said mass is "underneath" them... the rest is above them and around them.  By the time they reach the center, they would essentially have a nearly equal amount of mass in all directions, all pulling with pretty much the same amount of force.  Yup, they'd feel like they were floating and would have trouble discerning any "up" or "down" by then.  When they start digging the rest of the way through, they are no longer digging "down", and the further from the center of the earth it will feel more like digging up.  By the time they break through to the other side, they're back to a nice steady 1G.\n\nI hope this helps you, and I hope you don't need the equasions.  We're talking about some serious calculus here and I'm not sure I'm up to that right now ;)\n\nDuckie
1165028
Your question is theoretical and therefore all answers you receive will be theoretical.  I would think that even if it were for a split second, you would feel some kind of pain.  Of course, if you're floating around in space unprotected, you'd be dead before you got there.
743209
I would say that the most impossible part is when they enter the giant geode. If they were heading towards the center of the earth than when they entered the geode they would enter at the top and fall probably for hundreds of miles and die on impact. Also Giant Geode though a cool thought yeah right.
68589
One consequence would be wherever the earth stopped the side with the sun on it would fry and the side without the sun would freeze.  Gravity would be disoriented so the tide wouldn't go in and out as usual.  The list goes on...
1078859
If he falls freely with no rubbing against the walls of the hole he'll gradually speed up until he reaches the center of the earth, then he'll coast on past the center, gradually slowing down until he rises just to the surface of the earth on the other side where he'll come to a stop momentarily.  Then he'll fall back down into the hole and repeat the motion in reverse.  (It will be simple harmonic motion as one of the other responders said.) This will happen over and over.  He won't stop at the center of the earth.  I believe a round trip will take about 90 minutes.
351909
You would rip a hole in the time space continuum...  \nIf you hit an egg with a  rod it explodes and you have to clean up...
882616
Right into the ground
1051472
Ok, say the earth was all solid and there was a tunnel from one side to the other.  \n\nYou would keep accelerating as you moved toward the center of the earth, until you reached a very high speed.  As you passed through your speed would be at a maximum.  Then you would begin to decelerate as you went toward the other side.  Neglecting friction and air resistance, you would have just enough momentum to make it up to the surface on the other side, but you would have to grab on or else you would fall back into the hole and go the other way.  You'd continue oscillating back and forth forever if you neglect friction.  \n\nBut of course in real life you would slow down a little bit each time.  Your motion would be like a kid on a swing set, or a pendulum, a gradually decreasing swinging motion until finally you come to rest in the center.
327886
you would slowly melt in a horrible flaming death. but no, gravity would push you back down for ANOTHER horrible flaming death. yay.
20664
This could not be done on earth because of its liquid core, but perhaps it could be done on the solid moon.\n\nAt the surface of the earth, a ball (let's say of lead) would have a potential energy (PE - energy of position) relative to the center of gravity at the center of the earth.  As the ball is released into the theoretical hole, it would accelerate (like dropping it into a well) and some of the PE would be converted to kinetic energy (KE - energy of motion).  Because energy can neither be created nor destroyed, as the ball drops its speed increases and it has more KE but less PE.  The ball will continue to accelerate until it reaches the center of the earth but with less attraction from the earth's gravitational field because more and more of the earth's mass is now above (or behind) it.  At the very center of the earth the ball would have maximum KE but minimum PE.  Passing the center the process is reversed and the ball slows as it reaches the other side of the earth's surface, all the while reconverting KE to PE.  At the opposite surface the ball would have maximum PE (equal to the original PE but of opposite sign (say - instead of +).\n\nThe process could repeat forever if there is no wind resistance (perfect vacuum - like on the moon) and the hole was perfectly smooth exerting no friction as the earth spins on its axis constantly touching the ball to the sides of the hole.\n\nOf course this must be a mental exercise; but it is an interesting demonstration of physics and energy conversion in particular.  Good luck.
1047844
nice question  theoretically you would be pulled in every outward direction, which would be interesting.
316196
It would destroy the Earth. And I'm not being facetious.\n\nIt would destroy the Earth in many ways. First, it could actually break the crust of the planet. This alone could break us into multiple pieces.\n\nLet's say for sake of argument that you set it off in a place that isn't seizmically active, and you just blow away a big chunk. More nastiness ensues.\n\nSecond, the dust cloud would encircle us, and the temperature would drop. Instant ice age, everywhere.\n\nThird, the Earth is remarkably fragile. We're exactly the right distance to be warmed by the sun, but far enough not to be cooked by radiation. The hole created in the atmosphere would remove that protection.\n\nFinally, our orbit will be thrown off. Maybe not enough to be thrown into deep space, but enough to make us tumble in scary ways.\n\nBasically, the end of the world as we know it.
735930
Throw it straight up.  Gravity does the rest.  although, technically speaking, you can't throw a ball -anywhere- without it hitting various molecules and bacteria in our air.
461276
It would probably sound something like this:\n\n"AAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHH"\n\nsince we'd all just fly off the surface of the Earth and shoot into space.
1043854
This is a cool question.  If you were able to tunnel through the Earth, and fall through, your speed would keep increasing until you reached the graviational center.  At that point, the net gravitational force is zero, because all of the forces cancel.  However, you wouldn't just stop because of your inertia.  You would go right through, but then you would begin to slow down, until you reached the other hole.  Depending on how high you started from the first hole, and lets say you jumped five feet above the hole, you would come to a complete stop five feet above the second hole.  Then you would fall back through and continue that cycle.  (Of course we aren't considering air resistance, which screws everything up! ;0)\n\nGuess how long it would take to make it to the other side of the Earth through that tunnel?  Approximately 42 minutes!  Not a bad way of traveling.\n\nThe other cool thing is, if you were to tunnel from say New York to Berlin, which means the tunnel isn't obviously through the middle of the Earth, it would still take you 42 minutes!
613764
I assume you are wondering if the Earth's rotation will come into play here.  \n\nThe answer is yes.  This is the same as asking if a ball thrown in an airplane will land back in the person's hand.  Why is that so?  Everything in the plane is moving at the same speed, even the air molecules inside the cabin.  So, when the ball is thrown up, since it had the plane's speed before it was thrown, it will have that speed while going in the air, and since the air molecules are trucking along with everything else, they won't hinder the ball's motion.  \n\nIf you were to be able to watch the ball be thrown from outside the cabin, you would see the ball follow a curved parabolic path, where everyone in the cabin would see it go straight up and straight down.  You would see that curved path, because of the ball's horizontal motion due to the plane's speed.  Everyone inside wouldn't not see that, because they too are traveling with that same horizontal motion.\n\nSame thing applies here.  You share the same tangential speed as the Earth's surface, and so do all of the air molecules.  If you were able to jump for that long of time, you and everyone else around you would see you go straight up and straight down.  However, if you were being watched from space, you would follow a parabolic curve because of your tangential motion.