Infinite Plane

While the part of the Earth that we live in is only some finite section, the matter of the Earth itself is endless and goes on infinitely in all directions.

Gravity
In this case even the typical RE model of gravity, mass attracting mass, may apply. There is no way for an infinite plane to be pulled into the shape of a ball. Similarly, the horizontal component of the pull of gravity on any object on the disc’s surface would be balanced: there’s the same amount of mass to each side, meaning a net force of zero. The downwards force of gravity caused by an infinite plane is dependent solely on the depth of said plane. The thickness can be calculated to be approximately 4,250km.

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