Here's why:
* Newton's Law of Universal Gravitation: This law states that the force of gravity between two objects is directly proportional to the product of their masses. This means if you increase the mass of one object, the force of gravity between them will increase proportionally.
* Example: Imagine you have two objects, one with a mass of 1 kg and the other with a mass of 2 kg. The object with a mass of 2 kg will experience twice the force of gravity compared to the object with a mass of 1 kg, assuming they are both at the same distance from the Earth.
In simpler terms, the more massive an object is, the stronger the pull of gravity on it.
