Tabletop Trebuchet

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Our Tabletop Trebuchet, ready to launch

Challenge

What do they need to do? (Usually only one sentence)

Supplies

  • Tabletop Trebuchet
  • Projectiles (multiple sizes)
  • Tabletop Lever
  • Weights for Lever

What to do

  • Place a weight on one side of the tabletop lever
  • Ask the visitor to balance the lever with an equal weight
  • Ask them to explain how they balanced it
  • Remove all weights
  • Place a large weight near the fulcrum of the tabletop lever
  • Ask visitors to balance the lever with only a small weight
  • Again, ask them to explain how they balanced it
  • Discuss the similarities of this example and a trebuchet
    • Large weight near the fulcrum
    • Small weight far from the fulcrum
    • Arm allowed to rotate freely
  • Ask visitors which projectile you should fire
  • Demonstrate the trebuchet
    • Pull arm down and lock in place with firing pin (nail)
    • Place projectile in sling
    • Slide end of sling over hook at end of arm
    • Pull firing pin

What’s happening?