Creating the projectile system
Of course, catapults are designed to do one thing – hurl a projectile some distance. The traditional catapult we are making in this project will do this by rotating a kind of bucket arm around an axle, propelled by the elastic tension of a rubber band.
Completing the catapult frame
After disassembling the pieces of our catapult from the mock assembly done previously, we can change our view so that we are once again looking at the frame of our catapult from a 2D orthographic view. This will allow us to easily start the projectile system by finishing the frame part through the following steps:
- Unlike the structural beams that will hold the frames of the catapult together, the base of the projectile arm will need to be rounded for it to pivot smoothly. To do this, we can create a Hole in the frame of our catapult using a Cylinder shape that is 7 mm x 7 mm in length and width and centered, as shown in Figure 19.17:
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