Also known as "two masses on a pulley". Surprisingly, this simple device comes up a lot in intro physics texts. It also brings up some interesting issues. I will go over the basic way to solve a ...

Discover how pulleys make lifting easier by spreading out force and changing direction. This science extra explores simple machines in action breaking down how pulleys work and where we use them every ...

Large pieces of gym equipment, like cardio machines, barbell racks, and pulley systems, can be difficult for most people to replicate at home. Simple hacks like increasing time under tension and ...

Crunch gym in Burbank has a class that uses the Disq pulley-and-strap system. (Christina House / For the Los Angeles Times) By Roy M. Wallack .