The force between two objects changes depending on the distance between them according to the inverse square law. This law states that the force between two objects is inversely proportional to the square of the distance between them. In other words, if the distance between two objects is decreased, the force between them will increase. This is because the closer the objects are, the stronger the force between them. Conversely, if the distance between two objects is increased, the force between them will decrease.

Mathematically, the inverse square law can be expressed as follows:

$$F = \frac{kQ_1Q_2}{r^2}$$

Where:

- F is the force between the two objects

- k is a constant

- Q_1 and Q_2 are the charges of the two objects

- r is the distance between the two objects

From this equation, we can see that the force F is inversely proportional to the square of the distance r. Therefore, if the distance r is decreased, the force F will increase.