Lever

Pushing on a long arm of a lever lets a small force lift a heavy load on the short arm.

Example: A seesaw, a bottle opener and a crowbar are levers.

Lessons, worksheets, practice and tools on this: Forces and motion.

Related words

• Force: A push or a pull.
• Friction: A force that slows things down when two surfaces rub together.
• Magnet: An object that attracts iron and some other metals, and that has a north and a south pole.
• Gravity: The force that pulls objects toward each other, such as toward the center of Earth.

All words