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Trebuchet

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boxtriker:
Trebuchet
Some of you might think i have one of the best job's you can get. i started as a school Technician in Technology 7 months back was told i would get to make all sort's of one off weird stuff for the kid's an be the made to play with the lathe's mill's an all the wood working shop too. well this is the latest project a Trebuchet the full size beast stands 25 feet to the spindle with 7 tons on the arm throwing a 2 hundred weight ball. it's little brother hear is 5 foot to the spindle. they only want to fire tennis ball's with the year 9 kid's with it but after that i can give it to the big kid's to have a play so how much weight do i put in it for the big kid's an what's it going to Throw in weight

Eugene:
Perhaps you could scale it down from the one shown here.



Eug

mklotz:
If you're not one of those sad souls intimidated by a bit of math, spend some time here...

http://www.real-world-physics-problems.com/trebuchet-physics.html

Bluechip:
There was a Ch4 program ages ago with several being built.


Looks like this is it.

     

DBC

boxtriker:
Yes i'm one of them sad souls never could do the math i just go into brain lock but thanks for the link

http://www.real-world-physics-problems.com/trebuchet-physics.html

will pass it over to the 6 fourm class an get them to work it out......... my on the fly workings is telling me six or seven hundredweight in the bucket 5 to 1 arm with a ball weight around 2-3 pound is about max so a grapefruit could be top of the list for ammo

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