#1
haha well ok im in a physics class and we have to build some kind of machine to launch a ping pong ball 6 meters at a target. I was thinking about just building a small catupult out of Knex parts, but i dont have any currently. So i was wondering if you guys could come up with something clever to use instead.
: o and there cant be anything flamable or explosive
Last edited by elmeistro55 at Dec 14, 2009,
#2
bendy straws... and lots of them

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#3


When I had this assignment in High School, I convinced my group to make a 4 metre tall by 2 meter wide trebuchet that threw watermelons about 60 metres. My dad delivered it using a back-hoe to lift it and carry it around, as it was very solidly made out of wood and iron.

We got an A.
#6
Quote by ZanasCross


When I had this assignment in High School, I convinced my group to make a 4 metre tall by 2 meter wide trebuchet that threw watermelons about 60 metres. My dad delivered it using a back-hoe to lift it and carry it around, as it was very solidly made out of wood and iron.

We got an A.


I made one that threw things like 100 feet.

I recently burned it cuz I was bored.
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#7
http://wickedhowtos.com/index.php/2007/08/17/how-to-build-a-catapult/
Works great. Easy to scale up or down. I've built 3 of them over the years. Cops made me take the last one apart. Something about an ordinance against owning functional artillery.
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