At Pitsco, we’re doing our part to help slow the spread of COVID-19. Click here for more information.
FREE SHIPPING on all orders over $500 | Limited to lower 48 states
Home > Torsion Ballista

Torsion Ballista

SKU: W37966
A Pitsco Exclusive
$118.50 (USD)
Availability: In Stock


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.

Requires a small screwdriver, white glue, scissors, and ruler, sold separately. Available as a single kit or a pack of 10 kits.


Type: Multi-Student Project Packs, Project Kits Grades: 6-12


What You'll Get

  • 20 basswood sheets with laser-cut parts
  • 10 paper clips
  • 40 screws
  • Yellow twine
  • 20 Styrofoam balls (projectiles)
  • Torsion Ballista 10-Pack User Guide

Learning Values

  • Force and motion
  • Potential energy
  • Projectile motion
  • Torsion
  • Data collection
  • Historical perspectives
  • Systems
  • Modeling
  • Prediction
  • Technological design
  • Graphing
  • Measurements
  • Ratios


  • Students Served: 10
  • Tools and Materials Required: Small screwdriver, white glue, scissors, and ruler
  • Assembly Method: Gluing and screwing
  • Material: Laser-cut basswood
  • Dimensions: 6" x 7" x 3-1/8"

Related Products