if you dig a hole on earth and you go in it feet first, will you come out feet first or head on the other side
346050
You'll never get to the other side, first because if it was possible, you'd burn in the central core. But more importantly, the fact that you fall into the hole is because you're attracted by gravitation force, so you're attracted to the center of the Earth. The closer to the core, the stronger the attraction force. Therefore, if you reached to center of the Earth, you'd stay there and would not be able to continue your jouney to the other side, unless you had a power device that helped you get away from this force
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
464580
About 8000 miles.\n\nThe radius of the earth is approx 3959 miles - you would have to dig twice that distance, or 7918 miles.
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.
374485
you wont stop "falling" once you got to the ceter of the earth, but by that time you would have a bunch of speed. gravity woulnd't overcome this speed until you got almost all the way to the other side of earth - the whole way assuming earth is a perfect sphere and there is no air resistance. you would basically be a pendulum going back and forth - a pendulum or a swing stops falling in the middle but keeps going because it still has speed. air resitance would eventually slow you down until you want shorter and shorter distances and wound up in the center of the earth, then you would have to climb out. if you were smart, you would grab onto the wall the first time you reached the other side, and climb out only a short distance.\n\nalso the first guy is wrong and the 4th one is right, gravity decreases when you go into the earth - it is strongest right on the surface.
564603
Feet first is safer.  It also provides the ability to pop-up and advance if the ball is overthrown or an error occurs.  Getting off your stomach takes more time.  There really isn't a need to slide head first when advancing to a base because you'll get there faster on your feet.  Diving back on a pick off or an attempt to jar the ball from the catcher are the only two situations where a head first attempt is called for.
649787
this is a fallacy.  The toilet doesn't flush in any particular order.  It's not big enough to experience the coriolis effect.  You can try your own experiment.  Flush your toilet 10 times and see which way the water goes.  So to answer your question, yes the toilet will flush on the equator, it's still subject gravity.
699853
At about the center of the earth you would probably burst into flames do to the magma.if you survived that you would be upside down (relative to the ground)
314493
Gravity is what does it, and also standing on the outside surface of the Earth. In this way, the gravity of the Earth pulls all people on the outside of the planet inwards. So if we are standing on our feet, then the feet point inwards. And the gravity which also exists from all the other big lumps in the universe doesn't have anywhere near enough intensity here to pull people in other directions (although the moon and sun cause good movements upon water in tide cycles).
1022265
There is no sideways in space, either.\n\nDirections are relative to perspective. The direction that is down to me is the same direction as up is to people on the other side of this round world.\n\nMaybe the earth is inside-out?
675679
you'd fall very quickly and then go past the centre towards the surface at the other side.\nThen you'd start to fall back to the centre and go back to the other side.\nThis is basically how a pendulum works.\nBy the way.. there should be free fall at the centre of the earth... I.e. no gravity.
462383
up and down are directions from a gravitional center.  So, one would be digging down from anywhere on the earth's surface until he got to the earth's gravitational center...then he'd be digging up.
887433
You come first then under it
71856
The deepest "hole" drilled into the Earths Crust was 4,644 feet deep. Scientist were trying to reach the Moho, a boundary formally known as the Mohorovicic discontinuity. It marks the division between Earth's brittle outer crust and the hotter, softer mantle
85170
Not long after "sliding" in to a black hole your body will be totally shredded down to individual atoms. When you stand here on Earth your feet are actually pulled downward more forcefully than your head. This is because your feet are closer to Earth's center of mass where the 'pull' of gravity is strongest. Same thing happens inside a black hole, only the difference in gravity pulling at your feet and head are many millions of time greater--you get ripped apart.
308538
All things are attracted to the center of the earth regardless of their orientation to it.So you could dig "down" into the earth but once you passed through the center you would start digging "up" because gravity would be pulling you back to the center which is behind and "below" you
528890
depends on your perspective doesn't it.\n\nbut by definition, "down" is in the direction of gravity.\n\nit is impossible to dig "up" unless you were underground.