Question
Download Solution PDFConsider the following statements:
1. Gravitational force is an example of contact force.
2. Contact forces fundamentally arise from electrical forces.
Which of the above statements are correct.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Contact forces: It arises when two bodies are in contact with some other object: solid or liquid
- When two bodies are in contact mutual force arises due to newton's third law of motion.
- The component of contact force normal to the surface is called normal reaction and the component parallel to the surface is called friction.
- Gravitational force: It is the force of attraction between any two objects having mass.
EXPLANATION:
- Gravitational force is an example of non-contact force. Gravitational forces can act at a distance without the need for an intervening medium.
- Microscopically all bodies are made up of charged particles (electrons and nuclei) and all the contact forces that arise may ultimately be associated with electrical forces between the charged particles of different bodies. So contact forces fundamentally arise from electrical forces.
- Hence option 2) is correct.
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