Levers Help Us Lift (Part 3)

What You'll Learn

A pulley is a wheel with a rope. It helps you lift heavy things by changing the direction of your pull.

Step 1 — Read

Read about Forces with a partner or grown-up.

Step 2 — Do

Push a toy car across the carpet, then across a smooth floor. Measure how far it goes each time.

Step 3 — Observe

Watch carefully. What happens?

Step 4 — Record

Draw and write about what you learned.

1 of 3

Which simple machine is a ramp?