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 Digging A Hole?
 ArmitageShanks From Costa Rica, joined Dec 2003, 3797 posts, RR: 14Posted Sun Feb 22 2004 19:14:46 UTC (11 years 9 months 1 week 3 days 16 hours ago) and read 959 times:

 Hypothetical question: Lets say I started to dig a 10 foot wide hole from my backyard to the exact opposite side of the earth. What would happen to gravity when I reached the centre of the earth and started to dig up (or would that still be down)?? If I made it all the way through, how would that be physically possible? What would happen if I jumped in the hole?
 N766UA From United States of America, joined Jul 1999, 8648 posts, RR: 23 Reply 1, posted Sun Feb 22 2004 19:18:10 UTC (11 years 9 months 1 week 3 days 16 hours ago) and read 953 times:

 Maybe you'd just explode?
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 TWISTEDWHISPER From Sweden, joined Aug 2003, 715 posts, RR: 2 Reply 2, posted Sun Feb 22 2004 19:44:49 UTC (11 years 9 months 1 week 3 days 16 hours ago) and read 941 times:

 My guess is that you'd be floating....? Slightly towards the moon....
 707CMF From France, joined Mar 2002, 4885 posts, RR: 27 Reply 3, posted Sun Feb 22 2004 23:26:14 UTC (11 years 9 months 1 week 3 days 12 hours ago) and read 903 times:

 Actually, the further down you'd go, the lesser you would weight. Weight force is at maximum at the surface of the Eart, decreases on a square root ratio if you go up, and decrease (on a 3 root ratio I believe, but not sure) if you dig your way down. 707
 Sonic From Lithuania, joined Jan 2000, 1671 posts, RR: 0 Reply 4, posted Mon Feb 23 2004 00:13:30 UTC (11 years 9 months 1 week 3 days 11 hours ago) and read 886 times:

 You would burn, as it is hotter the more down you go. Also, certain parts of earth are liquid and thus you wouldn't pass through if you jump (nor you would be able to dig there).
 Photopilot From Canada, joined Jul 2002, 3033 posts, RR: 16 Reply 5, posted Mon Feb 23 2004 00:31:33 UTC (11 years 9 months 1 week 3 days 11 hours ago) and read 884 times:

 Here you go. Everything you wanted to know about what's inside the earth. Here's the link to the whole slide presentation. http://lewis.up.edu/mcs/wasowski/sci110/TnTkCh05/sld003.htm Here's the relevant slides. The Lithosphere The Crust - Mantle - Core As an analogy. If the earth were an apple, the deepest depth ever dug by man in the world's deepest mines, wouldn't even be deep enough to get through the apple's skin. Think about that. Steve
 JetService From United States of America, joined Feb 2000, 4798 posts, RR: 10 Reply 6, posted Mon Feb 23 2004 02:03:58 UTC (11 years 9 months 1 week 3 days 10 hours ago) and read 869 times:

 You'd be deafened by the loud whistling noise the Earth would make as it hurls through space.
 Tbar220 From United States of America, joined Feb 2000, 7013 posts, RR: 24 Reply 7, posted Mon Feb 23 2004 02:15:09 UTC (11 years 9 months 1 week 3 days 9 hours ago) and read 861 times:

 Yea, I think force due to gravity is inversly proportional to the radius of the earth squared. So the further down you go (ignoring effects of heat), you would feel less and less in weight. Once you get to the center, if the earth where the only object in the universe, you would probably just float because you would be at the center of gravity and mass of the entire system.
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 ArmitageShanks From Costa Rica, joined Dec 2003, 3797 posts, RR: 14 Reply 8, posted Mon Feb 23 2004 03:04:47 UTC (11 years 9 months 1 week 3 days 9 hours ago) and read 844 times:

 So, if I dove in the hole I would just kind of stop and hang in the middle.
 Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 45 Reply 9, posted Mon Feb 23 2004 03:31:37 UTC (11 years 9 months 1 week 3 days 8 hours ago) and read 835 times:

 You would weigh more all the way down to the center, but, you would stop because the gravity is equal all the way around the circumfrence of the earth... There would be an equal force each way... You may crush.... [Edited 2004-02-23 03:43:29]
 N766UA From United States of America, joined Jul 1999, 8648 posts, RR: 23 Reply 10, posted Mon Feb 23 2004 03:52:32 UTC (11 years 9 months 1 week 3 days 8 hours ago) and read 819 times:

 I ammend my prediction..... You would implode.
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 Sleekjet From United States of America, joined Jul 2001, 2054 posts, RR: 20 Reply 11, posted Mon Feb 23 2004 04:30:26 UTC (11 years 9 months 1 week 3 days 7 hours ago) and read 814 times:

 What you'd find along the way: Bill Buckner's firstbaseman's mitt, chads from the Florida ballots, the missing 727 from Africa, all of JCS's unsigned report cards from elementary school, and the end of the uploaded a.net picture queue.
 II Cor. 4:17-18
 PROSA From United States of America, joined Oct 2001, 5644 posts, RR: 4 Reply 12, posted Mon Feb 23 2004 04:37:47 UTC (11 years 9 months 1 week 3 days 7 hours ago) and read 808 times:

 You can pick up a shovel for ten bucks at Home Depot or Lowe's. Why not find out for sure? You can post your results in the Trip Reports forum
 "Let me think about it" = the coward's way of saying "no"
 MD11Engineer From Germany, joined Oct 2003, 14711 posts, RR: 62 Reply 13, posted Mon Feb 23 2004 05:02:46 UTC (11 years 9 months 1 week 3 days 7 hours ago) and read 801 times:

 Provided Earth would be solid and a perfect sphere, gravitational force would decrease with increasing depth because the forces of all the layers above you would cancel each other out and onkly the amount of mass between you and the center would attract you. At the center you would be weightless. An object thrown into a borehole right through the planet would (provided no friction) oscillate through the center. jan
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 Maiznblu_757 From United States of America, joined Mar 2002, 5112 posts, RR: 45 Reply 14, posted Mon Feb 23 2004 08:39:18 UTC (11 years 9 months 1 week 3 days 3 hours ago) and read 785 times:

 This is deep... LOL.. Very interesting to think about. I never thought about it, but, brainstormed and came up with my synopsis.. I think its pretty close to what would happen..
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