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catapult
I have to build a catapult for ap physics, it has to be 1 meter by 1 meter, and it has to be able to launch a 2.5 pound mass from 150 - 300 feet, I'm trying to beat the record at my school right now, and my last catapult that I built could only go to 65 feet, so...you guys have any ideas on how to make one? I'll try to post a picture of my old model and my ideas from my new. The rules are you have to be able to cock the arm of the catapult back without touching it, and have a trigger device, you can't use anything electric, or gas powered. Right now I'm using springs and bungie cords to get my power.....so, can anyone help me out? any ideas?
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