Gravitation – Final Revision Sheet
One-Page Formulas • Concepts • Exam Triggers (IIT/JEE)
1️⃣ CORE FORMULAS (Must Recall Instantly)
- Gravitational Force: F = GMm / r²
- Gravitational Field: g = GM / r²
- Gravitational Potential: V = −GM / r
- Potential Energy: U = −GMm / r
- Orbital Speed: v = √(GM / r)
- Escape Velocity: ve = √(2GM / r)
- Total Energy (orbit): E = −GMm / (2r)
- Kepler’s Law: T² ∝ r³
2️⃣ g VARIATION QUICK MAP
- At surface → maximum
- At height h → g = g₀ (R² / (R + h)²)
- At depth d → g = g₀ (1 − d/R)
- At centre → g = 0
Graph Insight: Linear inside Earth • Inverse square outside
3️⃣ ORBIT CLASSIFICATION (By Energy)
- E < 0 → Circular / Elliptical
- E =
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- Gravitation – Part 1
- Gravitation – Part 2
- Gravitation – Part 3
- Gravitation – Part 4
- Gravitation – Part 5
- Gravitation – Part 6
- Gravitation – Part 7
- Gravitation – Part 8
- Gravitation – Part 9
- Gravitation – Part 10
- Gravitation – Part 11
- Gravitation – Part 12
- Gravitation – Part 13
- Gravitation – Part 14
- Gravitation – Part 15
- Gravitation – Part 16
- Gravitation – Part 17
- Gravitation – Part 18
- Gravitation – Part 19
- Gravitation – Part 20
- Gravitation – Part 21
- Gravitation – Part 22
- Gravitation – Part 23
- Gravitation – Part 24
- Gravitation – Part 25
- Gravitation – Part 26
- Gravitation – Part 27
- Gravitation – Part 28
- Gravitation – Part 29
- Gravitation – Part 30
- Gravitation – Part 31
- Gravitation – Part 32
- Gravitation – Part 34
- Gravitation – Part 35
- Gravitation – Part 36
- Gravitation – Part 37
- Gravitation – Part 38
- Gravitation – Part 39
- Gravitation – Part 40
- Gravitation – Part 41
- Gravitation – Part 42
📘 OTHER PHYSICS LIBRARIES
- Momentum & Collisions – Complete Library
- Centre of Mass & System of Particles – Complete Library
- Work, Energy & Power – Complete Library
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