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Gravitational Interaction and Newton’s shell theorem Video Lecture | UPSC Physics Optional (Crash Course)

FAQs on Gravitational Interaction and Newton’s shell theorem Video Lecture - UPSC Physics Optional (Crash Course)

1. What is gravitational interaction?
Ans. Gravitational interaction is the force of attraction that exists between two objects with mass. It is a fundamental force of nature that governs the motion of planets, stars, and galaxies.
2. What is Newton's shell theorem?
Ans. Newton's shell theorem states that a spherically symmetric body exerts the same gravitational force on an object outside of it as if all of its mass were concentrated at its center.
3. How does gravitational interaction affect celestial bodies?
Ans. Gravitational interaction is responsible for keeping celestial bodies such as planets and stars in their orbits around each other. It also plays a crucial role in the formation and evolution of galaxies.
4. How does gravitational interaction compare to other fundamental forces?
Ans. Gravitational interaction is the weakest of the four fundamental forces of nature, including the strong nuclear force, weak nuclear force, and electromagnetic force. However, it has an infinite range and is always attractive.
5. How is Newton's shell theorem relevant in understanding the gravitational interaction of large celestial bodies?
Ans. Newton's shell theorem is essential in understanding the gravitational effects of massive celestial bodies such as planets and stars. It helps in calculating the gravitational forces acting on objects outside of a spherically symmetric body.
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