Class 3 Catapult

Project Snapshot

A class 3 lever puts the load on one end, the fulcrum on the other, and the effort somewhere in between.

This project illustrates this fundamental tool while also delivering some high-flying projectiles!

Click to expand

Tips and Troubleshooting

If the hinge is breaking or falling out of the cubes, then...

  • Just use 1 rubber band. 2 or more may put too much strain on the dowel

  • Make the dowel slightly longer so it can't fall out from between the cubes with holes

© 2021 STEM Inventions