Essence Essay Example

Essence Essay Example Essence Essay Essence Essay The materials and design we chose before construction consisted of eight or more large pieces of wood, small and large nails, a hammer, screws, drill, bungee cords and screw hooks in order to create a large scale catapult. The design process included a rectangular base made from the large pieces of wood with more weight in the back to hold it down. Two medium size pieces of wood will be drilled into the the top of the triangles to hold the release. The release will be hooked to the PCP pipe so that it can swing freely. A second piece of PCP pipe will be placed Just so that the release stops at a 45 degree angle. The release will be held back tight with a bungee cord that will be pulled in order to create the tension that will allow the release to go and throw the egg. After some hard work and long discussion or design plan has changed. Time was of the essence and a large scale catapult Just wasnt feasible. We decided to create a small scale catapult instead. This small scale one still had the same idea as the large one but Just cut down. We created a 72 inch base with a height of 7 % inches. Two triangles were created on each side with a piece in the middle for the release to be ttached to so it could swing freely. There will be another piece on the back of the base that will hold the tension for the release. Because we switched to small scale, the materials changed. For the base we used a 72 inch piece of plywood. Then, in order to make the triangles, we used four Popsicle sticks that were super glued to the base. Then we broke a piece of barbeque stick in half, and glued it to the middle of the two triangles. Before we glued it we cut a piece of straw and placed it around the stick so that the release could move. We then used bottle cap and glued it to another Popsicle and glued that Popsicle stick to the straw piece of the catapult. Next we placed 2 paper holders on the back of the base holding a rubber band. We then super glued a paper clip to the bottom of the release stick that will connect to the rubber band creating the tension. Then we glued another piece of barbeque stick lower on the triangle so that the release would stop at 45 degrees. We placed a cell phone on the base to hold it down and the placed the ammunition in the bottle cap, pulled back and let it fly.