Learn how to solve a ladder friction problem and determine the minimum coefficient of friction. Step-by-step explanations make it easy to understand the physics behind ladder stability and forces in ...

It may seem a bit strange that something as ubiquitous as friction is not very well understood, but it's true. On a macroscopic level, physicists and engineers can model friction and its effects very ...

Scientists developed a new model, which shows that rubbing two objects together produces static electricity, or triboelectricity, by bending the tiny protrusions on the surface of materials. Most ...

Researchers use single sheets and pairs of sheets of graphene to understand sources of friction.<BR><BR><a href='http://arstechnica.com/science/2009/03/resistance-is ...

Most people have experienced the hair-raising effect of rubbing a balloon on their head or the subtle spark caused by dragging socked feet across the carpet. Although these experiences are common, a ...