Gravitation
Uttar Pradesh Board · Class 11 · Physics
Quick revision notes for Gravitation — Uttar Pradesh Board Class 11 Physics. Key concepts, formulas, and definitions for last-minute revision.
Key Topics to Revise
Kepler's Laws of Planetary Motion
- Kepler's laws were derived from observations of planetary motion by Tycho Brahe
- These laws laid the foundation for Newton's Universal Law of Gravitation
- All three laws apply to any object orbiting another under gravitational force
Newton's Universal Law of Gravitation
- Every particle in the universe attracts every other particle with a gravitational force
- The force is directly proportional to the product of masses
- The force is inversely proportional to the square of distance between them
Acceleration Due to Gravity
- Acceleration due to gravity varies with height above Earth's surface
- It also varies with depth below Earth's surface
- Maximum value of g occurs at Earth's surface
Gravitational Potential Energy
- Gravitational force is conservative, so potential energy can be defined
- Potential energy is taken as zero at infinite distance
- Gravitational potential energy is always negative for bound systems
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Gravitation covers several key topics that are frequently asked in Uttar Pradesh Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
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