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ENGR 100

ENGR 100. Rube Goldberg Project Information. Rube Goldberg. Rube Goldberg (1883-1970) was a Pulitzer Prize winning cartoonist, sculptor, author, and an engineer by training. He was famous for his cartoons, which showed most complicated ways to achieve very simple tasks.

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ENGR 100

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  1. ENGR 100 Rube Goldberg Project Information

  2. Rube Goldberg • Rube Goldberg (1883-1970) was a Pulitzer Prize winning cartoonist, sculptor, author, and an engineer by training. • He was famous for his cartoons, which showed most complicated ways to achieve very simple tasks. • Maximum effort to achieve minimal results! • Note: visit the class web page to see the cartoons (click on “Links” on the left, then on “Cartoon Gallery”).

  3. Rube Goldberg Project Design and build machine that uses the most complex process to complete a simple task.

  4. Machine theme ideas • What can your machine do? • put a stamp on an envelope • screw in a light bulb • make a cup of coffee • select, mark, and cast an election ballot (2004 contest) • select, crush and place a 12-ounce aluminum can into a recycling bin (2003 contest) • raise, secure and wave an American flag (2002 contest) • select, clean and peel an apple (2001 contest) • snap a picture of your friend • Each team should pick a different theme. • Try to come up with something new!

  5. Competition guidelines • Machine has to act in a chain reaction to accomplish a simple task. • Think of it an en energy conversion machine. • You need to use 8 or more steps • a student can start the sequence of steps (but this does not count as one step) • Maximum machine size: • Length – 1.5 meters • Width – 1.5 meters.

  6. Competition guidelines • The design has to include four of the following • lever • inclined plane • wedge • pulley • process which converts potential energy to kinetic energy (i.e. something should fall or roll down) • gear system • funnel • tube with marbles

  7. Competition guidelines • Extra credit for using: • wheel and axle • screw • second class lever • chemical energy • electrical energy • more than 8 steps • Purchased simple machines may not be used (except for wedges and pulleys). Hand made pulleys are preferred.

  8. Competition guidelines • SAFETY IS THE TOP PRIORITY! • The machine will be disqualified if it is dangerous to operate. • The machine cannot use: • animals • fire • flammable or corrosive substances • liquids in excess of 2 liters • falling weights in excess of 5 kg • electrical components unless they are battery powered (9 V or less)

  9. Competition guidelines • Machine should be easy to reset. • Similar steps (like a marble rolling down a tube) can be repeated only once. • No limitations on the type of materials used. • Loose or flying object must remain within the boundaries of the machine • i.e. no flying champagne corks

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  18. Competition judging criteria • Demonstration will be graded based on the best of the three trials. • Judging will be based on the following categories: • general impressions (theme, Rube Goldberg spirit, explanation, team chemistry) • timing issues (description length, run length) • run related (completing the task, how easy it is to follow the flow of the machine, presence of Rube Goldberg style steps, human interventions, objects leaving the machine).

  19. Grading • Result from competition 50% • Poster 15% • Final report 20% • Oral presentation 15%

  20. Project schedule

  21. Materials • There are some materials in the lab • Try to find things you can use at home • Buy your own materials • we will return the money you spent (keep your receipt) • each team can spend $20 - $25 • The machines are recycled after the project is done.

  22. How to start? • Use the Internet to find purpose for your machine • start with the links provided on the class web page (click on “links” on the left) • use Google to find more ideas • Think of steps you would like to use • use the list provided in this presentation • look around your room/garage for ideas • Start today!

  23. More tips • Plan on paper first. • Start with one or two steps. • Play with things that you already have to see what you can make happen (or knock over). • Look at things in a new way. • Gravity is your friend. • Test, test again, and then test some more. Do it for each step. • It is better to have 8 steps that work well than 20 that do not work at all. • We have a camera in the lab to picture your results and intermediate steps (for poster and final report).

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