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If there was a hole straight through the Earth

  1. Apr 14, 2004 #1
    If there was a hole straight through the Earth, and you were to jump right down it, would you keep falling? Or would something push you back up?

    This is a debate a few of us are having.

    Thank you.
     
  2. jcsd
  3. Apr 14, 2004 #2
    Depends on a lot of things, but if it was just a basic hole and you neglect gasses and pressure and stuff, you would be driven into an harmonic motion - you would fall all the way down to the other side of Earth, then back to the first side, and so on and so forth.
     
  4. Apr 14, 2004 #3

    Kurdt

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    If there were a resistance from air say for sake of arguement then the motion would be damped and you should eventually come to rest at the earths centre.
     
  5. Apr 14, 2004 #4

    Integral

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    You also need to assume a not rotating earth, if the earth is rotating you will hit the sides of hole very quickly. So with no rotation and no air resistance you would become a permanent yo-yo oscillating from one side of the earth to the other. (How long can you hold your breath?). If the earth rotates, you be come a grease smear on the side of the hole. With no rotation and air resistance you would bounce a few times but ultimately end up weightless at the center of the earth.
    (How do you dig a hole thorough a molten core?)
     
  6. Apr 14, 2004 #5

    Kurdt

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    You would set up magnetic field generators so that the molten ions could not penetrate.
     
  7. Apr 16, 2004 #6
    I wonder if a magnetic field could even be made powerful enough to handle that scenario. :eek:
    Maybe a 100-foot thick wall of a titanium/ carbon composite tube could handle it.
    But, oh my, what an expensive joy ride! And a stellar class volcano if insertion goes wrong!
     
    Last edited: Apr 16, 2004
  8. Apr 16, 2004 #7

    Nereid

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    But wait!

    Does the Earth rotate as a solid body? All the way from the solid core, through the liquid core, the mantle, to the crust? If not, how long would pallidin's 100' thick walls last?
     
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