Newton's Law of Universal Gravitation states that:
* Every particle in the Universe attracts every other particle with a force that is:
* Proportional to the product of their masses
* Inversely proportional to the square of the distance between their centers.
This means that the force of gravity between two objects is stronger:
* If the objects have larger masses: The more massive the objects, the stronger the gravitational pull between them.
* If the objects are closer together: The closer the objects are, the stronger the gravitational pull between them.
Therefore, if two objects have different masses, the more massive object will exert a stronger gravitational force on the less massive object.
Example:
The Earth is more massive than the Moon. This is why the Earth pulls on the Moon, causing the Moon to orbit around it. If the Moon were more massive than the Earth, the Earth would orbit around the Moon.
