Here's why:

* Gravity: It's the force that attracts objects with mass towards each other. While it's what keeps us grounded and holds planets in orbit, it's incredibly weak on the atomic scale. You can overcome gravity easily by simply picking up a pen.

* Electromagnetism: This force governs the interaction between electrically charged particles. It's responsible for everything from electricity and magnetism to chemical bonds and light. It's much stronger than gravity, as evidenced by the ease with which magnets can overcome the gravitational pull of the Earth.

* Strong Force: This force holds the nucleus of an atom together, overcoming the electromagnetic repulsion of protons. It's the strongest of the four forces, but it only operates over extremely short distances.

* Weak Force: This force governs radioactive decay and is responsible for interactions involving neutrinos. It's weaker than the strong force, but stronger than gravity.

In summary: While gravity might seem powerful on a large scale, it's the weakest of the fundamental forces when considering individual particles.