The force that is not a fundamental force of nature (in the usual MCQ list) is tension.

Quick Scoop: The Fundamental Forces

In modern physics, there are four fundamental forces found in nature.

  1. Gravitational force
  2. Electromagnetic force
  3. Strong nuclear (strong interaction)
  4. Weak nuclear (weak interaction)

These are called fundamental because they are the basic ways particles interact; all other everyday forces can be traced back to combinations of these.

Why “Tension” Is Not Fundamental

In many exam-style questions like:

“Which of the following is not a fundamental force in nature?
(a) Gravitational force
(b) Electromagnetic force
(c) Strong nuclear force
(d) Tension”

the correct answer is (d) Tension.

  • Tension is a contact force that appears in ropes, strings, cables, etc.
  • At the microscopic level, tension actually arises from electromagnetic interactions between atoms and molecules in the material, not from a distinct, new force.

So tension is a useful derived or effective force in mechanics, but it is not a fundamental interaction of nature.

Mini Story-Style Explanation

Imagine you pull a box using a rope. You say, “The rope has tension.”
But what is really happening?

  • The atoms in the rope are slightly stretched.
  • Their electric charges resist being pulled apart.
  • That resistance comes from the electromagnetic force , one of the four fundamental forces.

So the real player is electromagnetism; what we call “tension” is just how that fundamental force shows up at our human scale.

Key Takeaway

  • Fundamental forces in nature: gravity, electromagnetism, strong nuclear, weak nuclear.
  • Common non-fundamental example in questions: tension force.

Answer to “which of the following is not a fundamental force found in nature” (for the standard option set): Tension force.

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