And Coulomb's law

Gravitational law and Coulomb's law are two fundamental laws of physics that govern the behavior of objects in the universe. Although both laws deal with the interactions between two objects, they differ in several ways:

1. Nature of the force: Gravitational force is a universal force of attraction between any two objects with mass. Coulomb's force is an electrostatic force of attraction or repulsion between two charged objects.

2. Type of particles involved: Gravitational force acts on all objects with mass, while Coulomb's force acts only on charged particles.

3. Strength of the force: Gravitational force is much weaker than Coulomb's force. For example, the gravitational force between two protons is about 10^-36 times weaker than the Coulomb's force between them.

4. Dependence on distance: Gravitational force is an inverse square law, meaning that it decreases with the square of the distance between the objects. Coulomb's force also follows the inverse square law, but it is modified by a constant factor that depends on the medium between the charged particles.

5. Direction of the force: Gravitational force is always attractive, meaning that it pulls two objects towards each other. Coulomb's force can be either attractive or repulsive, depending on the charges of the particles involved.

6. Source of the force: Gravitational force is generated by the mass of the objects, while Coulomb's force is generated by the electric charge of the particles.

Overall, while both laws deal with the interactions between two objects, they are fundamentally different in nature and strength. Gravitational force is a universal force that governs the motion of planets and stars, while Coulomb's force determines the behavior of charged particles in electric fields.