* Newton's Law of Universal Gravitation: This fundamental law states that the force of gravity between two objects is directly proportional to the product of their masses.
* The Formula: F = G * (m1 * m2) / r², where:
* F = gravitational force
* G = gravitational constant
* m1 = mass of object 1
* m2 = mass of object 2
* r = distance between the centers of the objects
Key Point: If you decrease the mass of either object (m1 or m2), the product of the masses (m1 * m2) decreases. Since the gravitational force is directly proportional to this product, the force will also decrease.
Example: If you reduce the mass of the Earth, the force of gravity between the Earth and the Moon would become weaker.
Important Note: The distance between the objects also plays a significant role in determining the gravitational force. If the distance increases, the force decreases even if the masses stay the same.