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 ...

A simple machine is a tool that helps us do work. They use clever shapes to help us move, lift, cut and other types of work. Learn more about the inclined plane, the pulley, the lever, the wheel and ...

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 ...