Quote:
Originally Posted by adultseo
The latest discoveries show that gravity has an effect on time. The stronger gravity is, the slower time will go. The closer to the center of the earth, the slower time will be.!
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Oh I just found this
"The force of gravity you feel standing on the surface of Earth has to do with two things. They are
1. Your distance from the centre of the Earth, R
2. The mass enclosed within the radius R, M(R)
Point 2 is actually quite subtle. It is only mass inside the radius at which you are at which affects the force of gravity you feel. That is not immediately obvious perhaps, but there is a neat theorem which undergraduate Physics majors go through which proves it (at least in the case of a spherically symmetric object).
So, if you tunneled through the Earth to the centre, right at R=0 there would be no mass enclosed, so there is no force of gravity. Once you go above the highest mountain peak all the mass of the Earth is interior to your position and so the mass no longer changes with radius and the 1/R2 law directly applies. In between those two extremes there is a play-off. As you move further from the centre of the Earth the gravity falls like 1/R2, but the mass enclosed within R also increases slightly, so the net change in gravity will be something different.
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