Source: TH
Context: The concept of ‘force’ in physics revolves around four fundamental interactions between subatomic particles:
Four fundamental forces:
| Force | Range | Strength (Relative) | Mediator (Particle) |
| Gravitational (attractive) | Infinite (long-range) | Weakest | Graviton (Hypothetical) |
| Electromagnetic (attractive or repulsive) | Infinite (long-range) | Moderate | Photon (It governs phenomena like electricity, magnetism, friction, and tension) |
| Strong Nuclear | Short-range (10^-15 m) | Strongest | Gluon (it binds the nucleus of an atom together, preventing it from breaking apart. It sustains nuclear fusion) |
| Weak Nuclear | Short-range (10^-18 m) | Weak | W+, W-, Z bosons (it acts on particles moving near the speed of light) |
However, the classification of fundamental forces faces challenges:
- Force carriers, like the Higgs boson and pion, may not be considered truly ‘fundamental.’
- Interactions such as the electroweak force raise questions about the number of fundamental forces
- The unique nature of gravity further complicates the classification, as it is fundamentally different from other forces.
