The Christmas contraption By: Cole Lillard Chantel Matikke Micah Mcfarland Spenser Walsh

Device Overview Toy car at top of ramp, parallel with a pipe filled with beads Car and stopper of pipe held by string attached at top of ramp Mousetrap pulls strings to untie them and releases car and beads

Energy Stored Potential Energy due to gravity Elastic Potential Energy Car and beads Elastic Potential Energy Mousetrap

Construction Issues Warping of wood Bracing of legs Material of pipe Finding way to release strings

Conclusion Team worked well, overcame obstacles Most time spent finding way to release beads and car Trial and error Learned to work under a time constraint