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 Super Ryan
Joined: 9/15/2007
Msg: 4
BlaBla and 2 questions.....What if you were at the centrePage 2 of 2    (1, 2)

Q1 What if you could build a room at the centre of the Earth and stand in it.Would you still experience Gravity/gravitational pull of the Earth?


Let's say the room was a perfect sphere at the very center of the Earth, and the Earth is a perfect sphere (it is actually not a perfect sphere).
You would feel a very small gravitational pull towards the walls. And the closer to the equator you would feel a small centrifical pull.
If you managed to get yourself balanced in the very centre of the room, you would feel a slight pull on all parts of your body that are not in the perfect centre.


Q2 If you could run on the equator as fast as the Earth spins in the opposite direction what would happen once the speed is matched?

I'm not sure what you are getting at.
But if it was me, I'd either be heading to the Olympics, or starting my own religion (running on water).
 Alli_oop
Joined: 6/30/2009
Msg: 9
BlaBla and 2 questions.....What if you were at the centre
Posted: 7/21/2009 9:51:50 AM
not until i got myself this p.c. 9 months ago that i discovered the Internet at the age of 32


congrats. my best friend is 32 as well and still terrified of using a computer! She has her own massage/asthetics bizz too! Silly girl.
 boloteee
Joined: 10/5/2008
Msg: 13
BlaBla and 2 questions.....What if you were at the centre
Posted: 7/21/2009 3:47:22 PM
Hmmm

Seeings how these questions situations will never be possible, I will answer based on
my own lil fantasy world.

Welcome to Diana's Truly Unbelievable Kick Ass Room in the Center of the Earth.

I would have mucho junk food and infinite channels. Lord knows Im never
getting out alive so why not indulge?

Copious amounts of porn and twinkies. Ohhh yesssss. Now If I could just find a nice man to go with me. Maybe 2. And why shouldnt I be greedy? Its MY fantasy dammit.

Seeings how its far too *warm* to leave my room in the center of the earth, i will not
be indulging in the run on the equator as fast as the earth spins.

Which is a shame. I will certainly have enough carbs to get the job done. sigh.

Oh well. More sex/porn/ and twinkies for moi

 JustDukky
Joined: 7/8/2004
Msg: 15
BlaBla and 2 questions.....What if you were at the centre
Posted: 7/21/2009 4:11:19 PM

Would anything change to do with gravity as you would not be moving with the planet?


Yes, you would weigh about the same as you would weigh at the poles, which is only marginally more than what you would weigh standing on the equator, once the opposing centripetal force (owing to the Earth's rotation) was added back in. (And don't forget you still haven't taken the acceleration owing to Earth's revolving about the Sun into account either, but it too is marginal and can be ignored for all practical purposes)

Unfortunately, even though you could easily run on water at such speeds (much like a skipping stone), the atmospheric friction would burn you to a cinder long before you reached that kinda velocity and even assuming you've got a bunch of heatproof shielding, you'd haveta eat one helluva lot of Wheaties for breakfast to have the kind of energy & horsepower required for such a sprint.
 RocketMan_Len
Joined: 7/5/2006
Msg: 18
BlaBla and 2 questions.....What if you were at the centre
Posted: 2/22/2010 12:18:43 PM

Now i think i know its the spin of the mass that holds us down? is that it? If the spin slowed would gravity be reduced?


No. On Earth, it's the mass that is the primary cause of gravity. There is a *minor* effect related to the spin, but it's in the opposite direction. (The spin will try to throw you off the surface, while gravity holds you down.)
 acuddler
Joined: 10/30/2009
Msg: 20
BlaBla and 2 questions.....What if you were at the centre
Posted: 2/22/2010 11:44:11 PM
The center of the earth is very hot. You would be cooked to death before reaching it. If you could stand the heat, and got to the very center you would find very heavy gravity, and be crushed to death by the pressure. You would not live long enough to build an elevator.
 desertrhino
Joined: 11/30/2007
Msg: 21
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BlaBla and 2 questions.....What if you were at the centre
Posted: 2/23/2010 10:14:46 AM

got to the very center you would find very heavy gravity,

Nope. You'd find no gravity at all... or, rather, that the gravitational attraction you felt from any direction would be cancelled by the gravitational attraction in the opposite direction.


and be crushed to death by the pressure

This part is true.


You would not live long enough to build an elevator.

Unless, of course, you could survive the heat and pressure. In that case, one assumes you would have the technology to build in that environment.
 xlr8ingmargo
Joined: 7/28/2009
Msg: 25
BlaBla and 2 questions.....What if you were at the centre
Posted: 2/26/2010 1:08:10 PM
Hey John, I like being the center of pressure. Can I go back to detention?
Just dont let anyone crush me.
 desertrhino
Joined: 11/30/2007
Msg: 28
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BlaBla and 2 questions.....What if you were at the centre
Posted: 3/2/2010 4:17:06 PM

The reason there is such high pressures at the centre of the earth is due to the heat and it being contained...like a pressure cooker. If we have built this 'hypothetical' room at the centre of the earth and the pressure inside was the same as the pressure outside there would be no crushing effect. If the planet was cold as another example, so you eliminated the effect of heat...there would be no pressure.


Are you sure? You might want to look into this; perhaps a quick google search would turn up a more reasonable answer. (Hint: The 6 septillion kilograms of rock above you are not located at the dimensionless point of zero net gravity within the Earth.)
 aremeself
Joined: 12/31/2008
Msg: 32
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BlaBla and 2 questions.....What if you were at the centre
Posted: 3/3/2010 1:26:45 AM
Ok, your at the center of the earth being pulled in all directions evenly, [because the mass is now all around you], I think.

or what do the laws of physics say about gravity in the center of a big mass?

Isn't the same thing being done to the air? so you won't be crushed?

I'll be thinking about this for days now!
 LeCutter
Joined: 2/25/2009
Msg: 36
BlaBla and 2 questions.....What if you were at the centre
Posted: 3/5/2010 3:53:03 PM
Now if you had a piece of coal up you ass in this room at the center of the earth...
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