Gravitational law: which is right?

enter image source here

1 Answer
Mar 11, 2017

D

Explanation:

If you're at the center of the earth, that means that that one part of the earth will always be canceled out by another section with equal area but opposite from the initial section. In other words, the earth pushes at you with equal forces when you're at the middle of the earth.

You can also say that near the surface of the earth, gravity is 9.8 meters per second per second. Since the equator, any place that is on sea level, and the poles are on the surface of the earth, the center of the earth is the only answer choice that you can choose.