Explore how forces and friction work to hold a block against a vertical wall. This video explains normal force, frictional force, and equilibrium conditions, showing how these forces balance to ...

Statics is the study of objects when they're NOT accelerating. Whenever you walk across a bridge or lean on a building, Statics are at work. Statics is the study of objects when they're NOT ...

Friction is a force that opposes motion. It is present whenever two surfaces rub over each other, such as when you rub your hands together, or when you apply the brakes on a bike or in a car. Friction ...

Physics, particularly forces and motion, can be challenging. By observing everyday motion, conducting simple experiments, and understanding Newton's laws in plain language, the concepts become more ...

A century after Nikola Tesla sketched a turbine with no blades, researchers are now using that same counterintuitive design to pull useful power out of static electricity. The latest experiments pair ...