For part of our Challenge Project, we had to build miniature cardboard trenuchets in order to give us an idea how to build the real ones. The whole point was to try and apply our physics knowledge with our building skills to build it. We used balancing principles (with the weights), and trajectory concepts (the angle of release being 45 degrees).
Some performance factors were the angle of release, and the amount of counterweights. Some environmental factors included the glue maintaining its elasticity, and the string not fraying over time.
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