Gravity is the natural force that causes things to fall toward the earth. (in physics)
Gravity, or gravitation, is one of the fundamental forces of the universe. In this article, we discuss it in three parts:

Everyday sense: the force which causes objects to fall onto the ground.
Newton's laws: how gravity keeps the Solar System together.
Einstein's theory of general relativity: the role of gravity in the universe.
Some physicists think gravity is caused by gravitons, but they are still unsure.
that is easy question
The force that attracts the body toward the center of the earth