A catapult is a ballistic device used to launch a projectile a great distance without the aid of explosive devices—particularly various types of ancient and medieval siege engines.[1] Although the catapult has been used since ancient times, it has proven to be one of the most effective mechanisms during warfare. The word 'catapult' comes from the Latin 'catapulta', which in turn comes from the Greek καταπέλτης (katapeltēs), itself from (kata), "downwards"[2] + πάλλω (pallō), "to toss, to hurl".[3][4] Catapults were invented by the ancient Greeks
Medieval catapultsThe last large scale military use of catapults was during the trench warfare of World War I. During the early stages of the war, catapults were used to throw hand grenades across no man's land into enemy trenches. They were eventually replaced by small mortars.
Special variants called aircraft catapults are used to launch planes from land bases and sea carriers when the takeoff runway is too short for a powered takeoff or simply impractical to extend. Ships also use them to launch torpedoes and deploy bombs against submarines. Small catapults, referred to as traps, are still widely used to launch clay targets into the air in the sport of clay pigeon shooting.
Until recently, catapults were used by thrill-seekers to experience being catapulted through the air. The practice has been discontinued due to fatalities, when the participants failed to land onto the safety net.[citation needed]
Pumpkin chunking is another widely popularized use, in which people compete to see who can launch a pumpkin the farthest by mechanical means (although the world record is held by a pneumatic air cannon).
In January 2011, PopSci.com, the news blog version of Popular Science magazine, reported that a group of smugglers used a homemade catapult to deliver marijuana into the United States from Mexico. The machine was found 20 feet from the border fence with 4.4 pounds (2.0 kg) bales of marijuana ready to launch.[34]