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Physics

Lever System

Quick fact

With the right lever and fulcrum placement, a person can lift an object weighing several tons—a principle used by Archimedes who said, “Give me a lever long enough and a fulcrum on which to place it, and I shall move the world.”

Why this is interesting

You’ve used a lever many times today without realizing it—opening a door, using a seesaw, or prying open a paint can. But how does a simple bar and a pivot make you feel like you can lift a car?