What causes objects to fall on earth and what is the rate at which this occurs

Gravity causes objects to fall on earth and the rate is based on the magnetic pull of gravity.

Objects that are free to move "fall" towards the center of the Earth because of

the gravitational forces that attract the Earth and the object toward each other.

An object on or near the surface of the Earth that has only the force of gravity

and no other forces acting on it accelerates steadily toward the center of the

Earth at the rate of 9.81 meters per second every second.

At the same time, of course, the Earth accelerates toward the object, although

at a considerably lower rate.