More Catapult Design IdeasĬan you build a giant catapult? We used this one to launch tennis balls over a net. If you want to learn more about Newton’s Laws of Motion, try our film canister rocket. The further you push the catapult arm down ( which takes more force from you ) the further the ball will travel. If you push the catapult arm down further you are storing more elastic potential energy which means more kinetic energy is transferred to the ball when you release it. Catapults and conservation of energyĪ lolly stick catapult demonstrates energy being converted from one type to another ( potential to kinetic ) and transferred from one object to another ( catapult arm to ball ). When you pull down on the catapult arm, elastic potential energy is stored, when you release the catapult arm the potential energy changes to kinetic energy ( energy of motion ) which is transferred to the object which then flies through the air. Newton’s First Law states that an object stays at rest until a force is applied to the object. See who can score the most with a set number of balls. Set a challenge to find out how far you can make a ball travel! Add some mathsĬreate a target with different numbers on different areas and use the catapult to fire balls at the target. Investigate to find out if a heavier ball travels further? Make it a challenge! Try adding extra or fewer sticks to the central part. Remember to only change one variable at a time Change the design
Popsicle Stick Catapult Investigation Ideas
Experiment with your table tennis balls. Attach a milk bottle top using double sided tape or strong glue. Twist another elastic band around the bottom of two sticks as you can see in the photo. Place padding between your cross brace and the. Insert a drill into the device 2.5 inches from the bottom edge. Tie an elastic band around the middle of the cross. Drill a 1 hole in each side of the 36 piece of plywood to secure it to the base. There should be more lolly stick on the end you want to use for the milk top. Place another stick above and one below the stack of 7 so they make a cross shape. Twist an elastic band around each end to hold them in place. Start with about 7 popsicle sticks and place them on top of each other. Another option is to forego the directions and allow the children to engineer the catapult themselves with the materials provided.Popsicle Stick Catapults What you need for a Popsicle Stick Catapult Launch your pumpkin! The children can have contests to see who can launch it the farthest, or set up small cups and see how many times a pumpkin lands in the cup. Use a few rubber bands and attach a plastic spoon to the end. The closer the 7 stick bundle gets to the edge, the more leverage the catapult will have. Tie a rubber band in a cross fashion, joining the two pieces together. Insert the 7 sticks banded together between the 2 sticks of the 2 stick bundle. Try to tie the band close to the edge of the sticks. Take the remaining 2 sticks and tie a rubber band on one of the ends. Tie another rubber band tightly around the opposite end so all 7 sticks are bound together. Take 7 of the craft sticks and tie a rubber band tightly around one end. markers, paint, stickers, or washi-tape to decorate if desired. If you weren’t able to get a supply bag this week, you can follow along with these instructions. This week’s curbside supply bags included the ingredients to make popsicle stick catapults. CATAPULT OUT OF POPSICLE STICKS HOW TO
Watch to learn how to make a popsicle stick catapult!
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