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 ...

Simple machines can be regarded as the elementary "building blocks" of which all more complicated machines (sometimes called "compound machines") are composed. For example, wheels, levers, and pulleys ...

A Simple Machine addresses the challenge of combining ... Hour Stool and Kettle Bell, incorporate pulleys, weights and levers powered by human energy to enable a new working rhythm.