Forces and Motion

Take the Money

Enrichment Activity for 5-11 11-14

What you need

  • A narrow-necked glass bottle
  • An old bank note
  • A table


  1. Balance the bottle upside down on the bank note.
  2. Try whisking the note away without tipping the bottle over. What happens?
  3. Gradually roll the note very tightly towards the bottle. Start gently nudging the bottle with the note as you reach it. Keep rolling the note.

Results and Explanation

You can remove the note safely. Friction between the bottle and note makes the note pull the bottle with it, but you counteract this by supplying a small force in the opposite direction through nudging it a little as you roll.

Would you recommend this resource to a colleague?

You can easily share this resource via email or social media using the links found at the top of the page.

is a special case of Force
Professional Practice

Get Chartered.

Are you a practising physics teacher? Want to become a Chartered Physicist? We're here to help. Get in touch at for support with your application.

Learn More