Cheeki-Bri wrote:if a trebuchet is standing still.. with no projectile loaded.... what energy would it involve?? static??? or just static friction??
Consider two situations: Trebuchet at rest after projectile is thrown, and trebuchet wound and prepared for launch, but projectile not yet loaded.
FYI, a trebuchet's projectile typcally lays on the ground even after it has been loaded.