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Big Bertha Bucket Engineering Fundamentals Final Project

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Project; Big Bertha Project Description Design and build a Rube-Goldberg device that will perform a simple task of your choosing. The device should perform this task in three or more distinct steps. Each step should demonstrate an energy conversion process which can be analyzed.

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Group Members Will Bunge Torry Milam Malcolm Rawls

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Big Bertha Bucket

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Overview of Project Big Bertha Bucket Purpose of Device To easily load a bucket of sand/gravel at a rate which has been previously calculated for the ease loading a measured amount.

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Drafting of Big Bertha

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Demonstration

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Summary of Energy Conversions Energy Conversion #1 Weight of Hot wheels Porsche =.33354 N = W Angle of Decline = 21 degrees = X F of car = W/(sin X) F =.931 N

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Energy Conversion #2 Force of Porsche =.931 N Tension of String =.931 N

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Energy Conversion #3 Mouse trap F=kx F= 5 N x= 9 cm k=.555N/cm

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Energy Conversion #4 F of Mousetrap = 5 N Force to open shutter = 5 N

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Flow Rate of Sand V=h(pi)r^6 h= 34 cm r= 3.81 cm V= 1550 cm^3 t= 5 seconds Therefore rate = 310 cm^3/ second

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Conclusion Now that we know the rate of flow of sand, we may place the bucket under the valve for a specific amount of time and know the approximate volume of sand/gravel in the bucket.

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