How Levers, Pulleys and Gears Work

From “The Efficient Engineer”. ( YouTube / Nebula )

Watch the bonus video on hydraulic systems here:

⚙️ This video explores different methods that can be use to amplify a force, and focuses on three types of machine – levers, pulleys and gears. The amplification of a force is called mechanical advantage, and it is useful for a wide range of applications, like lifting heavy loads.

Many thanks to sheffrator for the treadwheel crane model – "Treadwheel Crane" ( by sheffrator is licensed under Creative Commons Attribution (

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The Efficient Engineer is a channel aimed at mechanical and civil engineers. The mission is to simplify engineering concepts, one video at a time!

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