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catapult prezi

science project
by

Kalten Hayley

on 27 April 2010

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Transcript of catapult prezi

Catapult What is it used for A catapult is used to hurl heavy objects far distances. In the medieval times. Without the aid of explosives. What it was used for in more detail The catapult was a key weapon used against castle and cities with walls. They used the catapult to launch objects at them from far distances to breach the walls How it works
how are catapult works is you spin the weel to put tenison on arm. you either cut it or let go of it and the counter weights on the other side of arm will drive the arm down faster puting more force on the arm when launching. How it could be improved well you could make the arm longer and put more weight on the counter weight
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