Lever

simple machine · physics · force

Three handy parts. Every lever has a fulcrum (the pivot point), a load (the thing you're lifting), and effort (the push you give). Where they sit decides what kind of lever it is.

Tiny push, big lift. A lever multiplies your force, giving you 'mechanical advantage.' That's how you can pry up something much heavier than you could lift bare-handed.

One of six classics. Renaissance scientists named six simple machines, and the lever is one of them. It's been helping people for thousands of years.

A fair trade. Levers trade force for distance. You move your end a long way to move the heavy end a short way, so easier doesn't mean less effort overall.

All around you. Seesaws, scissors, wheelbarrows, and even your forearm work as levers!