1. Engineering Fundamentals 151 Fall 2008 Ben Roehrs Brandon Shaver
Snakes Like Marbles
Engineering Fundamentals 151
Fall 2008
Ben Roehrs
Brandon Shaver

2. Introduction Design Goals Inexpensive and Simple Construction
Achieve 15 second travel time limit
Attempt to be creative and unique

3. Construction Device separated into two portions
Backboard
Funnel
Spiral
Assembled by simple connections
Liberal use of tape
Wooden support structure for spiral
Most materials can be found around the home

4. Summary of Energy Ball Spiral Trajectory Conservation of Energy
PEg → KE
Spiral
Constant Acceleration
S1 = S2 + V1(∆t) + ½a(∆t)²
Trajectory
y – y0 = (x-x0)tanθ – g/(2v0²)(1 + tan²θ)(x-x0)²

5. Conclusions Demonstration of the Laws of Motion
Methods of Solving Construction Issues
Birch plywood only good for splintering