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.
Itâs very common to create armor out of worbla that is backed with craft foam this makes it so the worbla is more sturdy and does not get bumpy, this also makes it so the craft foam holds itâs shape and adds depth and details. I also suggest making your base out of wonderflex then adding details via craft foam.orbla also can only be ordered online and is much more expensive than both Craft Foam and Wonderflex. It can be heated with a hair dryer, heat gun or steam (such as from an iron). Pre-Painted Lux Armor made of Worbla.