1. The Water Works Joshua Coughenour Alexandra Pattenn Zach Stewart
Kathryn Wilson
EF 151 Rube-Goldberg device

2. Objective
To bust a water balloon through the process of multiple energy changes.
To create a relatively efficient project through the use of team work.

3. Materials Cost String Priceless Screws Priceless Car holder Priceless
Toy car and track $10
Wood platform and tower $9

4. Trial and Error
We used trial and error to not only find the needed approximate weights of the balloon and the box, but also to find the optimum distance from piece one to two. We also had to find the right length of string to get the most force from our box.
This is what happens when too many errors occur.

5. Conclusion
We found that our project included 4 different energy changes:
Car going down ramp
Car catching in box and swinging horizontally
Car and box dropping to datum
Water balloon rising to point of busting

6. Questions?