Tiffany's

Transcription

1 Tiffany's Aaron Myers Kenny Cornett Maruf Mahsim Spenser Parker EF 151 Fall 2006 December 5, 2006

2 Table of Contents Table of Contents Summary... 3 Introduction... 3 Breakfast Machine... 3 Starting the machine...3 Get the ball rolling!... 3 Anybody hungry?... 4 All the speeds... 4 Testing...4 Materials...4 Picture of our contraption... 5 Conclusion...5

3 Summary This document contains the information of the final project made in EF 151. It is an energy conservation machine, which our group developed the idea of making a few essential breakfast components that most people love. Our idea was derived from the fact that we were all hungry at the point of conception and had the urge for a toasty treat. The description of this machine and different points at which energy is transferred will be discussed in detail with the use of some equations and principles of physics dealing with energy conservation. Introduction The breakfast machine at its final stage will be able to make toast and a cup of juice with the use of conservation of energy (a slight mess may occur). The process happens very quickly and therefore and explanation of events its much more interesting than the actual contraption. All velocities of different moving objects at point of contact with next process are in a table below and based on a theoretical calculation of energy conservation. Breakfast Machine Tiffany's is an amazing and awe-inspiring contraption that is started with a simple pouring of a beverage. The concept of this machine is too lower the amount of effort required to make breakfast in the morning. Out of an entire day, people are the most tired and weak in the morning; this was the inspiration for the project, to make a bad part of the day, better! Starting the machine The first step in our machine requires the pouring of juice (or any preferred beverage) into a cup that is attached to a tiny car which is resting on a track. The juice causes the mass of the system to increase and therefore increase the gravitational potential energy at this point. Once the mass reaches a certain amount the car will begin to slide down the track because it overcomes the friction force of the tires on the ridge it is resting, and then converting all of the potential energy into kinetic until fully transferred at the bottom of the track where velocity is the greatest and has the greatest force falling into the funnel. Get the ball rolling! At the bottom of the juice car track lies a funnel which will guide all the spilled fluids into a cup, ready for consumption. The force of the first car rolling down the track will hit a stick that is holding up the second car and cause the second car to be set into motion down a new track. This second car then heads down the track converting potential energy to kinetic energy while pulling on a thin piece of string. The string is attached to a piece of paper horizontally inside of a PVC pipe which is holding a tiny ball in place. The string pulls the paper loose and releases the ball down the PVC tube.

4 Anybody hungry? The ball that was released by the pulling of the string and removing the piece of paper then travels through a small, curved section of PVC pipe and hits an upright hammer, the hammer then falls forward guided by the uprights that are holding it, converting potential energy into kinetic energy and hits the toasting button on a toaster. A few short seconds pass and toast and juice is ready to be served! (toast is not mandatory, bagels or any other bread-like food would work). All the speeds object Height in feet Velocity at contact ball ft/sec car ft/sec car ft/sec ft/sec hammer Each of the theoretical velocities above are predicted at the point with each object makes contact with the next section of the contraption. The above numbers are found through the following equations of energy conservation: mass*gravity*height=.5*mass*(velocity^2). The mass of each object cancels on both sides of the equation and the only required numbers are force of gravity and height of object relative to the ending point. These numbers are not accurate due to different forces that lower the velocity such as: friction or wind resistance that were not including in the final numbers. Testing When testing out our machine, every component of our contraption worked successfully four out of five tries. 80% success rate is a great percentage considering there are many groups who could not get their's to be successful even one time. We tested our machine a total of 25 times before bringing in front of the class to be displayed (even though our presentation was one of the five tries that did not work). Materials Our materials in total cost only a little over ten dollars because we only had to pay for the PVC pipe and a few tubes of special glue. Everything else was found in the EF lab and was used from there or was received from other groups that did not need certain material for their project. Together, we used MDF board, PVC pipe, glue, wooden rods, toy cars, paper cups, string, a hammer, and a toaster.

5 Picture of our contraption This picture was taken with everything set up and ready to go after all modifications and tests had been performed. *the date was wrong on the camera which took the picture the actual date is Dec. 5th Conclusion Conservation of energy along with a little creativity can make for a great breakfast in a matter of seconds! Procrastination can many times cause an increase in creativity. Epoxy is sold in moderation at the Dollar General. School experiments can be fun, its all about optimism. Also, we realize that repetition of success is near impossible the more elaborate a machine is. Together, through smoke, confusion, frustration and a little bit of blood, we had fun and completed what we all believe to be a great energy conservation machine.