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THE MIGHTY DUCKSBy:L.A. Parwani, Tyler Roberts,Michael Matthew, and Matt WilliamsonMatthew WIlliamsonTyler RobertsL..A. ParwaniMichael MatthewsTHE CREWRube Goldberg ProjectObjective: Build a device that will display a banner in the most inefficient, redundant way possibleConstraints: Must fit in a .5m x .5m x .8m box before operation (during operation size is unconstrained)Be assembled in under 1 minuteHave a minimum of 5 steps, 4 of which must include concepts we have learned from classTotal construction cost must be under 20$The device must run without any assistance from the engineers once triggeredCan not be in action for longer than 2 minutesMust be triggered by another device and also trigger a device Why the Mighty Ducks?MaterialsWood LeverBilliard BallSpring Cup FunnelPVC String

1)Wooden plank hits ball2)Ball rolls down pvc pipe3)Ball hits spring and bounces into the funnel4)Hinge weighed down by the ball goes down5)The string attached to the hinge is pulled up causing the sheet, covering the banner, to tear offStartFinishDesign and ConstructionComing up with a simple, unique yet redundant design with the skill available was very challenging and time-consuming.Construction:Our design changed many times throughout constructionPower tools, hammers and screw drivers were all things that most of us were not familiar with we learned a lot during constructionSet backs:Our troubles first began with our materials list; some objects were too heavy, others too expensiveOn the first trial run the ball kept rolling off of the side of the PVC Fine tuning the spring to project the ball into the funnel with precision every shotEnergyStep 1: Perfectly elastic Collision m1v1 = m1v1 + m2v2 Step 2: Conservation of Translational Energy .5mv^2+mgh=.5mv^2+.5Iw^2Step 3: Conservation of Energy.5kx^2=.5mv^2Step 4: Rotational Energy.5mv^2+.5Iw^2=.5mv^2Step 5: Perfectly inelastic collision .5mv1^2+mgh=.5Iw^2

ConclusionAn open ended problem was solved and our final product is consistently inefficient and redundantOur group learned how to work well together and new friendships were formedA lot of fun was had, engineering concepts and ways of communication were learned