Mechanics

A lever helps a small person lift something heavy. Try to make the seesaw balance!

Did you know?

• The scientist Archimedes said: “Give me a place to stand, and I will move the Earth.”
• Cranes use pulleys and counterweights to lift concrete blocks weighing many tonnes.
• A bicycle uses gears and a chain to turn your pedalling into turning wheels.

Quiz

Scissors are an example of which simple machine?

• Pulley
• Lever
• Spring