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A catapult is a device used to throw or hurl a projectile a great distance without the aid of explosive devices. Using potential energy stored in a rope spring, the catapult is able to throw a projectile. Popular as a medieval siege weapon it was able to destroy castle walls. Catapults were invented by the ancient Greeks.
June 2nd, 2013
Viewed 3 Times - Last Visitor from Guangzhou - China on 07/19/2014 at 12:41 PM
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