For example, the Earth exerts a gravitational force on the Moon, and the Moon in turn exerts a gravitational force back on the Earth. There is a downward gravitational force acting on you due to your ...For example, the Earth exerts a gravitational force on the Moon, and the Moon in turn exerts a gravitational force back on the Earth. There is a downward gravitational force acting on you due to your mass and the Earth's mass (your weight). There is an upward gravitational force acting on the Earth due to your mass and the Earth's mass. There is a downward force acting on the floor due to you. Two of these forces are acting on you: your weight downward, and the normal force upward.
