Matthew Burr Alex Denton Kayla Stone Blake Hanson The device is started by a mouse trap, which pulls a string that is wrapped around a rod. The rod rotates lifting two fly-weights into our “gate” releasing the meditation balls. The balls roll and drop into the “elevator” which pulls the pin on our “hammer” which both drops and turns on our sign. potential elastic (mousetrap) torque (tension from the fishing line) When the mouse trap is set and ready to go at 180 degrees the tension in the string is 28N. At the same angle the trap causes a 0.36N*m torque on the shaft. Torque= Tension*Radius Angular Acceleration= Torque/Mass Moment of Inertia mgh=1/2(mass moment of inertia)* (Rotational Speed)^2 We had some trouble figureing out how to get the gate both hold the balls in place and move out of the way at the same time. Awesome to see all we learned in action A lot of fun to create something big, wasteful, and essentially useless device. Harder than expected.