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Infographic: Gravitation | Physics for JEE Main & Advanced

The document Infographic: Gravitation | Physics for JEE Main & Advanced is a part of the JEE Course Physics for JEE Main & Advanced.
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FAQs on Infographic: Gravitation - Physics for JEE Main & Advanced

1. What is gravitation and how does it affect objects on Earth?
Ans.Gravitation is a fundamental force of nature that attracts two bodies towards each other. On Earth, it is the force that gives weight to objects and causes them to fall towards the ground when dropped. The gravitational force between Earth and an object is directly proportional to the mass of the object and inversely proportional to the square of the distance between the object and the center of the Earth.
2. How is the universal law of gravitation formulated?
Ans.The universal law of gravitation, formulated by Sir Isaac Newton, states that every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. Mathematically, it can be expressed as F = G(m₁m₂/r²), where F is the force of gravitation, G is the gravitational constant, m₁ and m₂ are the masses, and r is the distance between their centers.
3. What role does gravitational potential energy play in the context of gravitation?
Ans.Gravitational potential energy is the energy an object possesses due to its position in a gravitational field. It is given by the formula U = mgh, where U is the gravitational potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height above a reference level. This energy is crucial in understanding how objects move under the influence of gravity, particularly when they fall or are lifted.
4. How does gravitation influence the motion of planets and celestial bodies?
Ans.Gravitation plays a critical role in the motion of planets and celestial bodies by keeping them in orbit around larger masses, such as stars and planets. The gravitational attraction between these bodies causes them to follow elliptical orbits as described by Kepler's laws of planetary motion. This gravitational interaction also governs the stability of orbits and the dynamics of celestial systems.
5. What are the applications of gravitational concepts in real life and technology?
Ans.Gravitational concepts have numerous applications in real life and technology. They are essential in fields such as engineering, aerospace, and satellite technology. For example, understanding gravitational forces is crucial for the design of structures, the launch of spacecraft, and the operation of GPS systems, which rely on precise calculations of gravitational effects to determine locations accurately.
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