Here's why:
* Newton's Law of Universal Gravitation: The force of gravity between two objects is directly proportional to the product of their masses. This means that if you increase one mass, the force of gravity increases proportionally.
* Formula: The formula for gravitational force is:
F = G * (m1 * m2) / r²
Where:
* F is the force of gravity
* G is the gravitational constant
* m1 and m2 are the masses of the two objects
* r is the distance between the centers of the two objects
* Doubling the Mass: If you double one of the masses (let's say m1), the new force (F') will be:
F' = G * (2 * m1 * m2) / r² = 2 * G * (m1 * m2) / r² = 2 * F
Therefore, the force of attraction doubles when one of the masses is doubled.
