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# value of gravitational force

Sat 11 Dec, 2010 09:30 pm
we know that value of g on Earth,s surface is 9.8 m/s. but my question is that what will be the value of g inside the earth surface ? (a) increases (b) decreases (c) remains same ? must reply
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Type: Question • Score: 3 • Views: 1,321 • Replies: 6
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laughoutlood

1
Sat 11 Dec, 2010 10:09 pm
@usmankhalid665,
a

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farmerman

1
Sat 11 Dec, 2010 10:24 pm
@usmankhalid665,
Noone is going to do your homework, but here is a site that can provide some answers by available theory and data.http://www.splung.com/content/sid/2/page/gravitation
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Fido

1
Sat 11 Dec, 2010 10:38 pm
@usmankhalid665,
usmankhalid665 wrote:

we know that value of g on Earth,s surface is 9.8 m/s. but my question is that what will be the value of g inside the earth surface ? (a) increases (b) decreases (c) remains same ? must reply
Traveling toward the center of the earth it would first increase, but at some point equalize... Even gravity above the earth is not constant... Gravity is higher near dense bodies like Iron fields...
farmerman

1
Sat 11 Dec, 2010 10:41 pm
@Fido,
look at the graphs
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HFgulliver

1
Mon 13 Dec, 2010 07:32 pm
Newtons law of universal gravitation: F = G x ((first mass x second mass) / R x R)

R is the distance between the mass centers so as you got closer to the earth's center the force would increase.
farmerman

1
Tue 14 Dec, 2010 06:10 am
@HFgulliver,
Remember that the MAss of the earth is all BENEATH you when you use G(Mm)/r^2 while at the earths surface. So some things change as you go into the earth
ARe parts of the Mm values different as you burrow down into the earth? or are the r values the only things that change?

In other words, as you burrow into the earth isnt an increasing amount of the value of the mass above you the deeper you go ?

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