Easily Assemble an Ancient Battlefield Tool

Add medieval interest to your physical science explorations with this fascinating weapon of destruction. This versatile apparatus can be set up as a catapult or as a counterbalanced trebuchet.

Developed by Jeffrey Robbins, this device is an excellent combination of rotational motion, projectiles, gravity and torque.

One catapult/trebuchet set is included along with a rubber ball projectile, rubber band, and assembly and instructions.