* Mass of the objects: The more massive the objects, the stronger the gravitational force between them. This is why you are attracted to the Earth with a much greater force than you are attracted to a pencil.
* Distance between the objects: The closer the objects are, the stronger the gravitational force. This is why you feel a stronger gravitational pull at the Earth's surface than you would if you were in orbit.
* Gravitational constant (G): This is a fundamental constant of nature, and it's the same everywhere in the universe. It's a very small number, which is why gravity is a weak force at human scales.
You can summarize this relationship with the following formula:
F = G * (m1 * m2) / r^2
where:
* F is the force of gravity
* G is the gravitational constant (6.674 x 10^-11 m^3 kg^-1 s^-2)
* m1 and m2 are the masses of the two objects
* r is the distance between the centers of the two objects
This formula tells us that the force of gravity is directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
