Let’s understand the science behind mechanical energy and torsion, and put that maker grit to work!įold the nylon cord in half twice tie the loose ends with a square knot. Precise measurements are key to making all the pieces work well together.

Our design can't quite do that, but it's perfect for kids to build and use in games and experiments.īuilding this catapult takes math, science, and engineering skills. The onager catapult was a central siege engine for the Romans from the 4th century AD until the 6th century AD, capable of launching projectiles over 400 feet to breach castle doors and walls.

The Roman empire's onager catapult used torsion-twisting an object, in this case a restraining rope or spring, by applying torque-to build tension in the arm and generate a powerful swing. Buy it now and start your kid's journey to making something great! 100+ STEAM Activities Kids Won't Learn In School has the ultimate collection f experiments, projects, riddles, and trivia designed to help kids master early concepts in Science, Technology, Engineering, Art and Math.