Classical Mechanics
Newton’s Law of Universal Gravitation
With one equation, Newton revealed that the force pulling an apple to the ground is the same force holding the…
Classical Mechanics
Classical Mechanics
Centre of Mass
Every object behaves, for the purposes of motion, as if all its mass were squeezed into a single magic point…
Classical Mechanics
Tension Force
A rope cannot push, only pull — and that single rule explains how ropes, cables and strings transmit force across…
Classical Mechanics
Normal Force Explained
The invisible push a surface gives back when you press on it is the normal force — and it is…
Classical Mechanics
Gravitational Force and Newton’s Law of Gravitation
The same force that drops an apple holds the Moon in orbit, and Newton captured it all in one famous…
Classical Mechanics
Conservation of Momentum
When no outside force interferes, the total momentum of a system stays locked in place, which is why rockets fly…
Classical Mechanics
What Is Energy?
Energy is the universal currency that lets one thing change another, never created or destroyed but endlessly traded between motion,…
Classical Mechanics
Newton’s Second Law: F = ma
The most famous equation in mechanics ties force, mass, and acceleration into a single rule that predicts how every push…
Classical Mechanics
Newton’s Laws of Motion: All Three Laws Explained
Three short rules from 1687 still govern every car, rocket, and falling apple, turning the chaos of motion into a…