Contact forces involve objects in direct contact, while non-contact forces act at a distance. Fundamental forces govern interactions in nature, and Dr. Abdus Salam contributed to unifying two fundamental forces.
Contact forces are forces that occur between objects in contact, such as tension, friction, normal force, and the force of a spring. On the other hand, non-contact forces act at a distance without direct contact, like gravitational and electromagnetic forces. Fundamental forces include gravitational, electromagnetic, weak nuclear, and strong nuclear forces, which govern interactions in nature. Dr. Abdus Salam was a Pakistani physicist who played a prominent role in unifying electromagnetism and weak nuclear force, forming the basis of the electroweak theory.
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