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

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

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

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

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