Class 11 Physics Chapter 7 Gravitation – Revision Notes

Quick revision notes for Class 11 Physics Chapter 7 (Gravitation). These Class 11 Physics Chapter 7 notes are ideal for quick revision just before exams.

Newton’s Law

• F=Gm1m2/r²; G=6.67×10⁻¹¹ Nm²/kg².

Kepler’s Laws

• 1st: elliptical orbits.
• 2nd: equal areas in equal times.
• 3rd: T²∝r³.

g, Potential Energy, Escape Velocity

• g=GM/R²; decreases with height and depth.
• U=−GMm/r; v_e=√(2gR).

Satellites

• v_o=√(GM/r); geostationary period=24 h.

One-Line Summary

Gravitation describes the universal attractive force between masses, governing planetary orbits (Kepler’s laws), surface gravity, escape velocity, and satellite motion.

Written by Satish

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