Chapter 3 • Class 9 Physics
Gravitation
Class 9 Physics Gravitation: universal law of gravitation, value of G and g, free fall, mass vs weight, and thrust, pressure & buoyancy (Archimedes' principle) with notes, diagrams, solved examples and tests.
Study by topic — one focused page each
1
Universal Law of Gravitation & g
Why do things fall? Long before Newton, people knew apples drop and rivers flow downhill, but nobody could explain why the Moon does not fall to Earth…
Start this topic → 2Free Fall, Mass & Weight
What is free fall? When an object falls toward Earth with only gravity acting on it (no push, no air resistance), we say it is in free fall . During f…
Start this topic → 3Thrust, Pressure & Buoyancy (Archimedes' Principle)
Thrust: When a force acts on a surface, the part of the force acting perpendicular (at right angles) to that surface is called thrust . Thrust is simp…
Start this topic →Chapter-wide tests
Online Test
20 MCQ • 15 min
IMO / Olympiad Practice
Olympiad level • 15 min
📝 Full Chapter Test (Download & Print)
40 marks • 90 min • with answer key