We are a group of girls who were able to bulid a trebuchet that went 29.3 meters.
Step 1: Building the Base
In buliding a trebuchet, we start by buliding the base with 2X4's.
We use screws to put them together.
The red 2X4 is 20 inches long.
The blue is 48 inches long.
Step 2: Adding to the Base
We also drilled a hole about 38 inches from the top in the center for our rebarr. (next step)
Step 3: Throwing Arm
We used a 2X4 that was 48 inches long.
To make the hole go through on both sides a drill was used.
Make sure that the rebar or whatever you use goes all the way across and come out on both sides of the base arm.
Step 4: Supporting the Throwing Arm
We made the hole too big; this is to help stabalize it.
We also added plastic ties on both sides of the throwing arm.
The purple is 2X4's about 8 inches long for each side.
Step 5: Wheels
We found that in research that it is supposed to make the distance further.
Theses are your basic cart wheels form a hard ware store.
Step 6: Bucket
We used a laundary deturgent bucket.
The bigger you have the bucket the more objects to put in for a further distance.
To make the bucket stay we used a large i-hook that we screwed into the top of the throwing arm.
Step 7: Pouch
Next we got rope that is as long as the throwing arm and folded it in half. Cut in the middle of this .
we made our pouch out of mesh.
Tie the rope on both sides of the mesh.
Now get a key chain ring and tie the rope onto that.
Step 8: How Fast Is It?
This represents Newton's second law: What goes up must come back down.
The speed is almost 300 meters per second.
The velocity is almost 300 meters per second towards the JV softball field.
Step 9: Walking Out!
For weight we used, large rocks.