Explains how pulleys work to lift heavy weights more easily. A fixed pulley changes the direction of force, allowing for easier lifting, while a movable pulley reduces the amount of force needed to ...

All the Latest Game Footage and Images from Block Machine A difficult programming puzzle game about building parallel computing machines by placing blocks to solve surprisingly hard problems. Id ...

When you push or pull with a simple machine, you are applying a force and doing work. And, if you get more force out of a machine than you put into it, then that machine has a mechanical advantage.