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The correct answer is Gravitational force.
In physics, four fundamental forces govern the interactions of matter in the universe:
Gravitational force
Electromagnetic force
Strong nuclear force
Weak nuclear force
Among these, gravity is the weakest. Despite being responsible for holding planets, stars, and galaxies together, at the atomic and subatomic level, gravitational force is negligible compared to other forces.
To understand this better:
The gravitational force between two protons is about 10⁻³⁶ times weaker than the electromagnetic repulsion between them.
The strong nuclear force is the most powerful, binding protons and neutrons tightly inside an atomic nucleus.
The electromagnetic force is far stronger than gravity and governs the interactions between charged particles.
The weak nuclear force is stronger than gravity but weaker than electromagnetism and strong nuclear force. It plays a role in processes like beta decay in radioactive materials.
Even though gravity is the weakest force, it is always attractive and has an infinite range, which is why it dominates on a large scale. It governs the motion of planets around the Sun, the tides on Earth, and the structure of galaxies. In contrast, nuclear forces are very strong but act only over extremely short distances inside atomic nuclei.
Gravity is 10³⁸ times weaker than the strong nuclear force.
Strong nuclear force = strongest but short-range.
Electromagnetic force = governs electricity, magnetism, light.
Weak nuclear force = responsible for radioactive decay.
Gravity dominates on astronomical scales despite being the weakest.
👉 Final Answer: The weakest of all fundamental forces is the Gravitational force.
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