Rube Goldberg

Rube Goldberg= A machine that has many chain reactions which causes one thing to hit another and so on.

 

Our Rube Goldberg has been going really well. We have done seven steps and now all we need to do is get it to work. Brian and I were trying to get it to work for about an 1 hour and 30 minutes. Still we can’t get it to work and it’s very annoying. We have come so close two or three times. The worst part is setting it back up. Whenever I set it up I knock down all the dominoes and we have to start all over. One time it was right before the final step where it lost control and it didn’t work. That was the most annoying part.

Our Rube Goldberg was a great experience.  I learned what a Rube Goldberg machine was.  A Rube Goldberg machine is a chain of events and it has a final goal. Our Rube Goldberg machine has 12 steps. I never thought I would do a Rube Goldberg machine.  I am so happy our teacher assigned us this project.  I think you should try to make your own. It was the most fun project I ever had.  It taught me how to make things work, and also told me how to work with others for the same goal.  Just like being on a team.

Basically how it works is Brian drops a ball and it goes through a tube which pops out onto a trail where it hits dominoes which hits a ball which more dominoes which hits a ball which hits a ping-pong ball. Then the Ping-pong ball hits about 30 dominoes which then hits a ping-pong ball and it rolls into the net and scores.

 

https://drive.google.com/a/scarsdaleschools.org/file/d/0B9OMG9cSyIWrbU9qbWdySGdkekk/view

 

 

Comparing Rocket Launch Data

Today we graphed our rocketry launches and  apparently our first launch went higher than the second launch. According to the data the first launch launched two meters higher than the second launch. It turned out for most groups water and air made their rocket launch higher. You only put 90 psi in and 200 millimeters of water. For us that wasn’t the case. It worked better with just air. We had also made changes with the body so maybe it had something to do with the body itself. We had also 3-D printed a new nose cone.
 
Two of Newtons laws applied with the final part of the unit. Law 3 is “For every action there is an equal and opposite  reaction”.  This relates to rocketry because the air pressure inside the rocket pushes down when the rocket is released and that causes the rocket to go up.  Law  2 is “The acceleration of an object is related to the strength of an applied force, the direction of that force, and the weight of the object.”  This relates to rocketry because the more force (air pressure and water) the higher the rocket will launch. 

Rocketry Launch of 11/9/15

    Today we had our second launch and everybody’s rocket worked out except ours. At first I was very depressed because we were the only group that failed. But then we each got to pick a helper and we all did. It took a little while to reorganized our group but finally we managed to work everything out and get things back into shape. Everyone split the jobs and we got right to work. It was very interesting because we were the smallest group and now were the biggest. We completely redid our rocket model and design. I think that we got rid of all of the flaws that went wrong in the old rocket model. We are launching our rocket tomorrow and I hope that our rocket will finally launch and we will be successful.