1. Rube Goldberg Device Group 4
Jac Parks, Ben Fredericks
Shane Nixon, Wesley Ward

2. Design Overview Design Considerations Design Concepts
Encompassing course concepts while staying simplistic.
1 min set up time, 2 min run time
Interfacing with Group 3 and 5
Design Concepts
Translational Energy
Conservation of energy and momentum
Center of mass
Torque
Projectile motion

3. Operation Summary
Marble 1 is set in motion by group 3 and traverses 2 inclined tracks
Marble 1 moves down funnel triggering seesaw and motion of marble 2
Marble 2 accelerates down projectile ramp triggering mouse trap
Mouse trap springs and releases banner
Banner triggers group 5 device

4. Calculations
Conservation of Energy- (Ball rolling)- 1/2mv2+mgh+1/2I2+Win=1/2mv2+mgh+1/2I2+Eloss
Conservation of momentum-(Seesaw collision with Marble 2)- m1v1+m2v2=m1v’1+m2v’2
Torque-(motion of mousetrap pulling string)-IrI x IFIsin
Center of mass-(seesaw)- mici / mi
Projectile motion-(Marble 2 launched over gap)- x2=x1+voxt y2=y1+voyt+1/2at2

5. Design/Construction Issues
Having to collaborate and fully understand the two other teams projects so that each project triggers the next.
Making it easy enough to set up in 1 minute.
Incorporating so many of the concepts we learned this year into one project that works seamlessly.
Aligning everything to make sure the balls will fully complete their courses.

6. Conclusion
This experiment was a fun, visual way to see everything we have learned in this class put into use.
The Rube Goldberg experiment shows us how many concepts will have to be integrated together in order to engineer a working system.