Class 3 Catapult

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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!

Materials
Materials

Step 1
Step 1

Step 9
Step 9

Materials
Materials

1/10

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Tools and Materials

The Engineering Creation Kit has everything you need for this project and many more from STEM Inventions, or get the supplies in bulk:

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