Eisco GP00009 Garage Physics Premium Large Trebuchet Kit

Description

Garage-Physics-Premium-Large-Trebuchet-Kit-Eisco-GP00009-p-Eisco-GP00009-Garage-Physics-Premium-Large-Trebuchet-Kit-The-trebuchet-is-one-of-the-most-elegant-of-all-medieval-weapons-ever-invented-With-a-simple-counterweight-beam-arm-and-sling-heavier-projectiles-can-be-launched-much-further-than-is-possible-with-much-more-complicated-siege-engines-The-key-to-this-success-is-the-efficiency-with-which-the-gravitational-potential-energy-of-the-counterweight-can-be-converted-to-kinetic-energ