Trebuchet Definition and 56 Threads

I make trebuchet for my physics project and i need to calculate the distance it fires and compare it to my acctual firing. I know how to use the non vertical equations for circular motion but i don't know which equation to use for this. I can calculate the projectile motion after i have...

Can anyone give me advise on how i would optimize a trebuchet? I think i can figure out most of it except what equations should i use for the rope attached to the projectile.

I guess this qualifies as a brain teaser. http://www.globalspec.com/trebuchet/ I scored 2405 on my first try.

For a physichs project I had to build a trebuchet. I measured how for it shot, and how long it took. After some calculations I got: Vi in the X= 6.258 VI in the y= 6.64 Accel in X= 0 Accel in Y= -9.8 Distance in the X= 4.8 Distance in the Y= 2.25 Time in the X= 1.36 Time In the Y= .68...

OK as you can tell I am 12 but fairly smart (wink,wink) This summer me and my friends plan to have a huge neighborhood water gun fight and I plan on building a waterballoon launching Trebuchet about 3 or 4 feet heigh. I need some help with the materials I should use and the weight of the well...

Anyone have some ideas about how to build a scale model of a trebuchet?