Solve : How to throw a 2' Diameter ball 7' in the air?

1.	Solve : How to throw a 2' Diameter ball 7' in the air?
Answer» https://www.youtube.com/watch?v=f5zWzICG5to We are currently looking at a form of catapult. But any creative ideas would be most welcome. Things to keep in mind: - Contraption must fit within 112" perimeter. + May EXTEND a maximum of 20". - May not EXCEED 5' in height. - The BALL is ~ 2 lb and has a fabric cover. - Cannot cost over ~$600 (We need to allocate most of the $4,000 budget for other things) - No combustible materials or self-detaching parts.You want a trebuchets.... BIGGEST bang for the Buck.

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