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What are the four basic forces of nature?
AGravitational, electromagnetic, weak nuclear and strong nuclear
BGravitational, frictional, weak nuclear and strong nuclear
CGravitational, electromagnetic, tension and normal force
DElectromagnetic, frictional, tension and strong nuclear
Answer & Solution
Correct answer: A. Gravitational, electromagnetic, weak nuclear and strong nuclear
1. Only four distinct forces account for all known phenomena.
2. They are the gravitational, electromagnetic, weak nuclear and strong nuclear forces.
3. Friction, tension and the normal force are not basic, since they come from electromagnetic interactions of atoms.
4. The two nuclear forces act over an extremely short range, so they are never felt directly.
_Source: OpenStax College Physics (CC BY 4.0), Ch 4 "Dynamics: Force and Newton's Laws of Motion", section 4.8 Extended Topic: The Four Basic Forces_
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