Forces and Motion

Fork Balancer

Enrichment Activity for 5-11 11-14

What you need

  • Tall glass
  • Two identical forks
  • Toothpick


  1. Push the prongs of the two forks together
  2. Push the toothpick between the prongs to hold the forks together
  3. Balance the end of the toothpick on the side of the glass

Results and Explanation

The forks can hang off the side because all the forces are balanced

can be analysed using Force
has the special case Thermal Equilibrium
IOP DOMAINS Physics CPD programme

The IOP is proud to present our new Forces CPD Domain

This is the first of a collection of videos for you to view ahead of our live support sessions for teachers and coaches of physics.

Find out more