How can I build a small catapult simple for a school project?

you construct a little bar really should keep in mind: question of Shakespeare monster : How to build a small simple catapult for a school project I need to have to develop a catapult for a science class, and I want to know what the very best design. The base need to not exceed 1 cubic foot, and the arm can not exceed 2 meters. It can be produced out of every little thing. I ought to shoot in a position to a large 5ft marshmallow, but if I can throw the marshmallow the furthest I get a candy

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