Classical Mechanics
Circular Motion and Centripetal Force
Why does a whirling object keep turning instead of flying off straight? The answer is a force that always points…
Classical Mechanics
Classical Mechanics
Simple Harmonic Motion
From a swinging pendulum to a vibrating guitar string, one elegant pattern of back-and-forth motion underlies them all.
Classical Mechanics
Hooke’s Law and Springs
Why a stretched spring pulls back harder the further you pull it, and where that tidy straight line finally breaks.
Classical Mechanics
Work Done in Physics
Carrying a heavy box across a flat room does zero physical work — here is why physics defines effort so…
Classical Mechanics
Friction Force Explained
The force that lets you walk, brake, and tie your shoes is also why nothing keeps moving forever — friction,…
Classical Mechanics
Angular Momentum
A spinning skater pulls in her arms and speeds up — the same conservation law that keeps planets orbiting and…
Classical Mechanics
Torque in Physics
Why pushing a door near its hinge barely moves it, and how the same twisting physics tightens a bolt and…
Classical Mechanics
Kinetic Energy
Kinetic energy is the energy of motion, and understanding why it scales with the square of speed reshapes how you…
Classical Mechanics
Power in Physics
Power is not how much work you do but how fast you do it, and grasping that distinction explains everything…
Classical Mechanics
Momentum and Impulse
Momentum is the stubbornness of moving things, and impulse is how you change it, which is why airbags, follow-through, and…