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Our Rube Goldberg Machine

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manahil k

on 3 March 2014

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Transcript of Our Rube Goldberg Machine

Input and output forces of the simple machines used.

In total our Rube Goldberg Machine uses 4 simple machines which are lever, pulley, wheel and axle, and inclined plane. We chose these specific simple machines since we believed that they were easy to construct and were best suitable for our machine. The input force for the first lever was the book falling onto the book. The input force was the book's mass that pushed one side of the lever down. The output force was the mass of the can #1, which was placed on the opposite (from the book) of the lever. The output force was lifting the can #1's weight off the other side of the lever. The input force of the pulley system was the force of the can #1 which pulled on the string of the pulley, the same can which pulled on the string was the same can which was the output force of the lever. Therefore when the can #1's weight was pushed off the lever it triggered for the load on the pulley to come down. Which means that the output of the pulley was the load of the can #2. The 3rd simple machine which was a wheel and axle had the input force of a push, force was exerted on to the wheel and axle, which later pushed the output force which the mass of marble #1.

The design and and concept

When thinking of the design for our Rube Goldberg machine, we knew that the design must be simple and shouldn't take up much space. Many ideas were taken into consideration when thinking of what our 8 steps would consist of. However we realized steps should not be too complex and easy to construct. Therefore many ideas were not agreed upon. We discussed about the certain systems we'd like to include in our machine. Our group decided a domino effect would be easy to build, and was chosen as one of the 8 steps. We then thought of the other steps considering what would trigger the dominoes and what the dominoes would trigger.
We also made sure to include 4 different simple machines, and chose which simple machines would be suitable for the type of machine we wanted to build. The simple task that our machine completes is pouring milk into a bowl of cereal.

Step by step process
The simple task of our Goldberg machine is to pour milk into a bowl, and to do that we've created “Mad Milk Machine”! How our machine works is that you start off by placing a marble at the beginning of the 1st inclined plane. Force is applied on the marble, when a toy car which is a wheel and axle system pushes the marble down the 1st inclined plane. It then makes it's way down the second inclined plane into a tube, when the marble falls through the tube a hits a popsicle. This popsicle acts as a stopper for a larger marble, so that the larger marble will not start rolling right away.

When the small marble knocks down the popsicle it allows the marble to roll down something similar to a maze. The marble makes it's way to the ground to hit wooden blocks which are arranged to preform a domino effect. The wooden blocks knock a a set books place in front the other, these books also preform a domino effect. The last (4th) book falls down and hits one side of the lever down. On the other side of the lever was placed a can which is pushed of the opposite side of the lever. This can was holding a piece of string which was an important component of the pulley system. The pulley then drops the load of the can on the other of the string. This load of the can falls on the another lever. This lever carries a cup of milk on it's opposite side which jumps up, and falls in to the bowl placed next to it. Causing the milk to pour into the bowl.
Over view of the
Mad Milk Maker
How it works!
Our Rube Goldberg Machine
BY: Manahil, Kishauna, MIchelle, and Hyacinth
Full transcript