Big Bertha Bucket Engineering Fundamentals Final Project.
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Transcript of Big Bertha Bucket Engineering Fundamentals Final Project.
Big Bertha BucketBig Bertha Bucket
Engineering Fundamentals Final Project
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.
Group Members
• Will Bunge
• Torry Milam
• Malcolm Rawls
Big Bertha Bucket
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.
Drafting of Big Bertha
Demonstration
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
Energy Conversion #2
Force of Porsche = .931 N
Tension of String = .931 N
Energy Conversion #3
Mouse trap
F=kx F= 5 N x= 9 cm
k= .555N/cm
Energy Conversion #4
F of Mousetrap = 5 N
Force to open shutter = 5 N
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
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.