Making a catapult – looking at elasticity Elasticity is the ability of a solid to return to its original shape after being subjected to strain. Most solid materials demonstrate elasticity, up to a point called the elastic limit. When the load is higher than the elastic limit damage to the material occurs. To demonstrate elasticity we made a catapult. Boys Crafts, For Kids, Bottle Cap, Rubber Bands, Diy Catapult, Science Sparkly, Popsicles Sticks, Science Fun, Crafts Sticks
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Mandy would like this: popsicle stick bracelets: boil in water for 15 minutes then place in cup to dry~this is cool!
Build the catapult in different sizes, or with different rubber bands, or pencils of different length - discuss the changes each variable makes to the resultant motion of the projectile. Demonstrate circular motion and rotational KE. Based on the relevant principles, have the kids design and build other working models of catapults. Here are some ideas.