Catapult physics is basically the use of stored energy to hurl a projectile (the payload), without the use of an explosive. The three primary energy storage mechanisms are tension, torsion, and gravity.The catapult has proven to be a very effective weapon during ancient times, capable of inflicting great damage.atapult physics is basically the use of stored energy to hurl a projectile (the payload), without the use of an explosive. The three primary energy storage mechanisms are tension, torsion, and gravity. The catapult has proven to be a very effective weapon during ancient times, capable of inflicting great damage.
Assembling the Armor. 1  1. Shape and contour the craft foam to your body. 2  2. Glue the craft foam together wherever the pieces were designed to overlap. 3  3. Reinforce and stiffen the armor.  4. Work in 1  sections. 5. Leave openings.  6. Decide how to attach the armor to your body.
V on it to see the â¦ one below it. Like in the cartoon, the lighter one (V cut) goes above the darker one. For the top, I would make a half-kimono (cut a trapeziod with the height of your shoulders to your waist and the non-parallel lines the length from your left shoulder to right hip and vice versa).I'm not quite sure how to do the armor, but i would get craft foam or pleather and overlap them to create the front peice.or the top, I would make a half-kimono (cut a trapeziod with the height of your shoulders to your waist and the non-parallel lines the length from your left shoulder to right hip and vice versa). I'm not quite sure how to do the armor, but i would get craft foam or pleather and overlap them to create the front peice.