Rube goldberg device
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Rube Goldberg Device. An entirely complicated and complex system created by ridiculously good looking men, to achieve one mind boggling simple task. The Task:. Design and build a Rube G oldberg device that will activate an electronic device Make it annoyingly inefficient and complicated

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Rube Goldberg Device

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Rube goldberg device

Rube Goldberg Device

An entirely complicated and complex system created by ridiculously good looking men, to achieve one mind boggling simple task.


The task

The Task:

  • Design and build a Rube Goldberg device that will activate an electronic device

  • Make it annoyingly inefficient and complicated

  • Set off another groups’ device

  • Use at least five steps and at least four physics concepts


Physics concept 1 center of mass

Physics Concept 1:Center of Mass

Bottle filled with bee bees has weight in different parts of the

bottle. The bottle has to be balanced perfectly at the center

of mass before the chain reaction occurs.

mass(bottle)*(1/2)length(bottle)+mass(neck)*((1/2)length(neck)+length(bottle))

CM =

Mass(bottle)+mass(neck)


Physics concept 2 torque

Physics Concept 2:Torque

As the chain reaction occurs, the center of mass is offset and moved from the back to the front and in effect, the torque of the bottle triggers another chain reaction by triggering beads and gravitational force.

T = I(bottle+I(neck) * alpha

I(bottle)=(1/2)mass((radius1)^2+(radius2)^2)

I(neck)=(1/2)mass((radius1)^2+(radius2)^2)

Alpha= Omega/radius^2


Physics concept 3 conservation of translational energy

Physics Concept 3:Conservation of Translational Energy

As the beads travel in linear motion, they experience the conservation of translational energy, thus creating linear kinetic energy.

For the translational kinetic energy, that is the kinetic energy associated with rectilinear motion, of a body with constant mass , whose center of mass is moving in a straight line with speed , as seen above is equal to


Physics concept 4 conservation of a ngular momentum

Physics Concept 4:Conservation of Angular Momentum

Through the system of the angular ramps, the bee bee’s experience conservation of momentum and end with the same velocity they start with.

P1 = p2

M1v1 = m1v1’


Rube goldberg device

By: Devon Hardy, Scott McCoullugh, Matt Moore, and Scott Williams

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