* Direct Proportionality: The gravitational force is directly proportional to the product of the masses of the two objects. This means that if you double the mass of one object, the gravitational force between the two objects will also double.
* Mathematical Expression: This relationship is expressed in Newton's Law of Universal Gravitation:
```
F = G * (m1 * m2) / r^2
```
Where:
* F is the gravitational force
* G is the gravitational constant (approximately 6.674 × 10^-11 N⋅m²/kg²)
* m1 and m2 are the masses of the two objects
* r is the distance between the centers of the two objects
* Example: Imagine you have two objects, one with mass 1 kg and the other with mass 2 kg. If you double the mass of the first object to 2 kg, the gravitational force between them will also double.
In essence, the more massive the objects are, the stronger the gravitational attraction between them. This is why planets have a strong gravitational pull and why you feel the Earth's gravity so strongly.
