Tests of a proposed friction-factor equation have shown it to be accurate for calculating pressure loss in turbulent flow for a pipeline transporting a non-Newtonian fluid, such as most crude oils and ...

Earlier, we saw that the work done by friction on a particle sliding on a rough surface is negative, causing a loss in total mechanical energy as the particle slides. Here, we will address the ...

Friction material manufacturer Fras-le North America Inc., which is exhibiting at AAPEX 2011 through Nov. 3 at the Sands Expo Center in Las Vegas, Nev., has turned part of its booth (#2658) into an ...

Everybody knows how a yo-yo works. It's two disks mounted on an axle attached to a piece of string, and it goes up and down if you throw it right. But what about when the two disks and the axle aren't ...