Is there negative gravity at the centre of the Earth?

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Jon Swinbourne

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Jon Swinbourne asked the Naked Scientists:
   
If gravity is caused by mass and I was at the center of the earth, would there be some type of negative pressure or gravity?

What do you think?
« Last Edit: 01/10/2010 18:30:02 by _system »

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Offline Geezer

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Is there negative gravity at the centre of the Earth?
« Reply #1 on: 01/10/2010 19:21:31 »
No. I believe gavity can only make masses move closer to each other, never the opposite.
There ain'ta no sanity clause, and there ain'ta no centrifugal force Šther.

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Offline Soul Surfer

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Is there negative gravity at the centre of the Earth?
« Reply #2 on: 01/10/2010 19:23:56 »
No the gravity at the centre of gravity of the earth is zero  this is because the gravity inside a uniform spherical shell is zero throughout the shell.

This results in the gravity below the earth's surface falling of linearly to zero as you go deeper towards the centre of gravity
« Last Edit: 01/10/2010 19:27:29 by Soul Surfer »
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