Winter temperatures and low humidity cause static electricity in clothes. Learn how to prevent static cling without using dryer sheets or fabric softener.

The familiar heat, wear and general grinding to a halt of friction are all caused by what's going on at the microscopic level when two things rub. And down there, even the smoothest surfaces usually ...

It's perhaps the second week of your introductory physics course. Your instructor starts talking about friction and writes the following two formulas on the board. Then there is probably some sort of ...

Say we consider a simple experiment of balancing a wooden rod on two fingers. The finger on the left, (1), will remain stationary, whereas the finger on the right, (2), will be moved toward the left.

DIY Chicken Rings and Static Friction Savers for Arborists and Tree Climbers shows how to create simple, effective tools that improve rope management and safety in the canopy. Learn to make chicken ...

Consider the block shown above supported by feet at A and B that is at rest on a rough floor. A horizontal force P is applied to the right on the block. As the magnitude of P is increased slowly, two ...