Ok guys, I've been doing some investigations and I've dedicated the past 2 months to researching the mathematics of the Earth and something about gravity just didn't add up.
Ok so here's the theory. Because mathematically, a flat surface is just a sphere of infinite radius, let's assume that the Earth is a sphere of infinite radius which would make it flat. Here's the thing, if we use Newton's law of universal gravitation, we get:
g (acceleration due to gravity) = GM/r^2
Now, we see that because r approaches to infinity, M also approaches to infinity. Applying l'hopital's rule by taking the derivative of the numerator and the denominator gives us that the acceleration due to gravity is infinity. Obviously, this is false.
Then, I considered the fact that the Earth is modeled as a hollow sphere - if we have the density of Earth is p, then we get:
M (mass) = p*4*pi*r^2
then, we have acceleration due to gravity g=G*p*4*pi*r^2/r^2
cancelling r^2, we have acceleration g = G*p*4*pi
So, we now know that gravity only depends on the average density of Earth.
Now, when you think about it, the government says that there is this thing called "pressure" - which is why we can't dig too deep - but what if that's actually because Earth is a hollow sphere of infinite radius, which means it's just a flat surface hovering over nothingness. That's why the government says that we can't dig deeper than a certain amount because the pressure is too big - pressure is actually not real, it's a ploy to stop us from finding the truth.
So when you see something about NASA officials taking lie detector tests that prove the Earth is a sphere, remember that this is just semantics - Earth is a sphere, but it has infinite radius which means that it effectively is a flat surface.