On this page we will take you through our Rubber Band Trajectory Project and the process of the experiment. In this project we were given the testable question "How does the angle of a rubber band launcher effect how far it goes?" We then had to follow the scientific method, Define the experiment, Testing, Data Analysis, and Conclusion. Throughout this page we will explain step by step how we completed the experiment, what problems we faced, and the the answer to our testable question.
Project Overview
First we had to decide how we were going to make our launcher. The purpose for making the launcher is to take out human error. Which there would be a lot of if we just shot it from our fingers. Next we had to acquire materials such as wood and screws and a hinge. We came to a bit of a rode block gathering them all, but once we did, we built the launcher which we nicknamed "the Fish". Basically what we did was drill a hole and pound in the red piece which holds the rubber band until it is shot, then we attached the angle block (top half) to the base block with a hinge. Then we screwed on the angle setters, made the measurements and drilled the holes. We had to drill the holes so that we could put the wire in and keep the angled block at the correct angle (see picture above). Last we glued on the close pin and our launcher was complete. We went to an auditorium and began trial. The launcher is simple but effective. Basically all you have to do is attach the rubber band to the wooden close pin and then stretch it and loop it to the red piece at the top. When we were testing we discovered that we had measured wrong and all of our measurements were off by about 15 degrees. A little bit of a set back, but the next morning we added the correct 75 degrees and continued trial.
When we were done we edited our film and selected our music. Finally we recorded our data, found the averages and uncertainty's, and wrote our conclusion.
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