Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

If the Earth were a cube.

  1. Apr 23, 2013 #1
    Hypothetically, if the Earth were a cube, would walking to the corners(vertices etc.) feel like you were going uphill or would it feel flat?
     
  2. jcsd
  3. Apr 23, 2013 #2

    Danger

    User Avatar
    Gold Member

    I don't know, but it's a sure bet that I'd trip and fall off of the edge... :rolleyes:
     
  4. Apr 23, 2013 #3

    Drakkith

    User Avatar

    Staff: Mentor

    I'd guess it would feel like uphill.
     
  5. Apr 23, 2013 #4

    Evo

    User Avatar

    Staff: Mentor

    Both ways? :tongue:
     
  6. Apr 23, 2013 #5

    collinsmark

    User Avatar
    Homework Helper
    Gold Member

    Yes, uphill (on your way toward a corner/edge, and assuming you are already closer to that corner/edge than the corner/edge behind you.) Your idea of what "down" is (and feels like) would always be pointed toward the center of the huge cube.

    [Edit: Evo: :biggrin:]
     
  7. Apr 23, 2013 #6

    Drakkith

    User Avatar

    Staff: Mentor

    Nonsense. Once you step over the edge you just slide down the rest of the way!
     
  8. Apr 23, 2013 #7

    Evo

    User Avatar

    Staff: Mentor

    :tongue:
     
  9. Apr 23, 2013 #8

    SteamKing

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    If the earth were a cube, everybody would be like square, man.
     
  10. Apr 23, 2013 #9

    Danger

    User Avatar
    Gold Member

    Oh, please, no! We'd still be up to our asses in Beatniks. :bugeye:
     
  11. Apr 23, 2013 #10

    Drakkith

    User Avatar

    Staff: Mentor

    I'm far too hip to be square.
     
  12. Apr 23, 2013 #11
    Don't worry about being square, it's the new circular.

    Yes, that's the best I've got.
     
  13. Apr 23, 2013 #12
    The surfaces would always look flat but feel increasingly tilted as you walked toward a corner or an edge.
     
    Last edited: Apr 23, 2013
  14. Apr 23, 2013 #13
    Good question! Now I'm going to be asking everyone I know this question.
     
  15. Apr 24, 2013 #14

    Danger

    User Avatar
    Gold Member

    I've seen your hips; you're more pear-shaped than square.

    My condolences.

    And you've been a devotee of Dale Carnegie for how long?
     
  16. Apr 24, 2013 #15

    chiro

    User Avatar
    Science Advisor

     
    Last edited by a moderator: Sep 25, 2014
  17. Apr 24, 2013 #16

    Garth

    User Avatar
    Science Advisor
    Gold Member

    7857919092_36751e55ba_o.jpg

    I've always known "It's a Square World"!!

    It's a Square World

    A zany TV comedy programme that had me in stitches whilst a teenager; ah those were the days my friend......

    Garth
     
  18. Apr 24, 2013 #17

    FlexGunship

    User Avatar
    Gold Member

    I'm most interested in the idea of a vertex of ocean. The question leads a lot of the topographical details to the imagination, but I'm fairly confident that, of any eight equidistant Terran-verticies, at least one would be in water.

    "We'll take the boat to the top of Ocean Peak, and we'll water ski down!"
     
  19. Apr 24, 2013 #18
    That would also bring up the matter of "What is 'sea-level'"
     
  20. Apr 24, 2013 #19
    Which way are the gravity vectors pointing at the vertices? It seems the vertices are like giant mountains which might support glaciers if the atmosphere could extend that "high", but liquid water would run off toward the center of each face.
     
    Last edited: Apr 25, 2013
  21. Apr 26, 2013 #20
    That's a good question. On earth, the gravity vectors are everywhere perpendicular to the ocean surface, as you would expect. The only places where the gravity vectors on a cubic planet are perpendicular to the cube surface are at the center of each face. So any surface water is constantly trying to get to that point, creating a lot of turbulence. If surface water behaves as it does on earth, the gravity vectors are always perpendicular to the mean water surface. So what would the ocean surface look like? It would not be "flat"; that is, conforming to the surface of the cube face.
     
    Last edited: Apr 26, 2013
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: If the Earth were a cube.
  1. Time Cube (Replies: 3)

  2. Rubiks Cube (Replies: 6)

  3. Were the geniuses at? (Replies: 53)

  4. What were they thinking? (Replies: 11)

Loading...