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 ...

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 ...

I'll be honest—friction is pretty complicated. Imagine that I have a block of wood sliding on a table. In some way, the atoms on the surface of the wood block are interacting with the surface atoms on ...

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 ...

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 ...