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 and inversely proportional to the square of the distance between their centers.
* Mass vs. Weight: Mass is a fundamental property of an object that measures the amount of matter it contains. Weight, on the other hand, is the force of gravity acting on an object's mass.
* Larger Mass, Stronger Force: The more massive an object is, the stronger the gravitational force it exerts.
So, while weight is the *result* of gravitational force, mass is the property that determines the strength of that force.
