Lesson 03 – Experiment: Make a Movable Pulley

Read The Experiment to Learn How to Make a Movable Pulley

Make a Movable Pulley

Try this experiment to see how a movable pulley works.

What You Need
What You Do
What You Need

  • A metal spoon
  • A large, sturdy paper clip
  • Two pieces of string, one 30 cm long and the other 1 m long
  • Masking tape
  • A table

What You Do

  1. Tie one end of the 30 cm piece of string to the spoon. Tie the other end to the paper clip.
  2. Tape one end of the 1 m piece of string to the edge of the tabletop. Run the other end of the string through the paper clip.
  3. Pull the string to lift the spoon.
  4. Notice what happens to the position of the paper clip as you pull the string.

Now Show What You Know!

Complete some questions about the reading selection by clicking “Begin Questions” below.