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. The catapult will be made out of popsicle sticks and rubber bands. In this experiment you will be building and testing a catapult. You need to cut notches in two of the jumbo popsicle sticks. 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. 10 Jumbo Popsicle Sticks -10 Rubber Bands - 1 Bottle Cap -1 Sticky Dot - 10 pom poms & 10 pencil erasers -1 protractor - Measuring tape 2. 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 the ball ). piece of scrap wood wood glue rubber bands craft sticks clothes pins (I suggest wooden ones over plastic) plastic spoons bottle caps (I used the ones from. 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. Stack the seven popsicle sticks together and use two rubber bands to hold them tight: 2.Rubber band the two tongue depressors together at one end. Materials: 10 Jumbo popsicle sticks Rubber bands Bottle lid (soda pop or milk caps work great) Plastic spoon (you can use this instead of a bottle lid). 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 in different areas and use the lolly stick catapult to fire balls at the target. Investigate to find out if a heavier ball travels further. Try adding extra or fewer sticks to the central part of the catapult. Remember to only change one variable at a time Change the design Popsicle Stick Catapult Investigation Ideas cut out a piece of paper to make a box this will be the place where the amunition goes note bend the paper at the lines make sure to glue or tape the side so the are sealed then glue or tape the box on. 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.Tie an elastic band around the middle of the cross.There should be more lolly sticks 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.
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