1. Bryan Schow Brandon Johnson Ben Burns
The marble slab
Bryan Schow
Brandon Johnson
Ben Burns

2. Design
Our design has a small marble “snake” back and forth along a wooden track, slightly decreasing the angle downward at each turn to create its velocity.
The materials used were cost effective and easily available. Two trips to Lowe’s were necessary.
Cost – roughly $35.00 (including destroyed materials)
Time to construct: first- 4 hours; second - 7 hours

3. Energy
We calculated the ball’s energy along the track using Conservation of Energy equation.
mghinitial + ½ mv2initial= mghfinal + ½ mv2final
Ball’s energy changes from gravitational potential to kinetic, neglecting friction.

4. Construction Issues
One main issue in the beginning was that our materials were not doing the job we originally thought they would.
Another huge roadblock was that overnight on Monday, November 23rd, our device was destroyed. No hard feelings though.
Difficulty consistently cutting grooves with saw.
Hot glue is HOT! Who would’ve thought?

5. Conclusions
We overcame several obstacles and learned how to work as a team to accomplish the task.
As a team, we spent several hours coming up with sketches, ideas, and materials, and then using these to achieve our goal.
Applied principles and concepts learned this semester.
Overall, we worked together, applied EF 151 concepts, and hopefully, fulfilled all requirements for this project.