Why there only four fundamental forces of nature? Why is gravitational force called a weak force of nature?

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Solution

The Four Fundamental Forces and their strengths.

Gravitational Force – Weakest force; but infinite range.

Weak Nuclear Force – Next weakest; but short range.

Electromagnetic Force – Stronger, with infinite range.

Strong Nuclear Force – Strongest; but short range.

Gravitational Force: Gravity is the weakest force as its coupling constant is small in value. Gravity cannot be felt by us in daily life because of the huge universe surrounding us. The electromagnetic force is undoubtedly stronger as it deals with microscopic particles (electrons, protons). Gravity is always attractive in nature.

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