Inspired by the ancient Greek and Roman ballistae, this kit uses torsion on both sides of the bow arm to fling Styrofoam balls across the classroom!
Great for demonstrating how torque can be applied to create power as well as potential and kinetic energies and projectile motion.
The kit features laser-cut basswood pieces, string, hardware, and two Styrofoam balls (projectiles).
Requires a small screwdriver, white glue, scissors, and ruler, not included. Available as a single kit.