A trebuchet has a lever arm with a large, heavy counterweight on one end and a smaller projectile on the other end. A trebuchet is a siege engine that was used in the Middle Ages to fling projectile ofup to140 pounds at enemy structures.Please Rate this Instructable and follow me for more cool step by step guides. When the counterweight is raised up, it has lots of gravitational potential energy. (The bowl on an ice cream scoop would work well for a smaller-sized catapult.) :). What if you glue multiple popsicle sticks together to make a longer arm? You want the trebuchet to be fairly narrow to ensure that it throws its projectiles in a straight line. You can also tie both string ends to wire loops to make it easier to put the sling on and remove it from the hook. Cut a small section of milk shake straw, about one inch long. How to Make a Mini Trebuchet out of Popsicle Sticks. -John ] Josh 7/16/2005 at 8:30 pm 7. (This distance is something you can try adjusting later.). You also have the option to opt-out of these cookies. Try this project to build a miniature version! First, tape the AA battery to one end of a popsicle stick. Today we continued practicing hitting a target with our trebuchet. A trebuchet works differently. A trebuchet uses a sling and has a counter-weight which, as it is dropped, forces the long arm up to pull the sling and the projectile along a slide at the base. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. 1, Podcast: SWE Governance Update for Collegiates, Three Questions About Working From Home During COVID-19, SWE issues a statement on COVID-19 (Coronavirus), A Conversation with Jennifer Medina from SoCalGas, Whats Important in a Scholarship Application, New SWE Program to Support Community College Affiliates. Any sort of Projectile (I used polo :P) Eye Hooks Add Tip In the Middle Ages armies would use them to hurl stones at castle walls. Form a triangle with 3 popsicle sticks and glue the ends together. The counterweight and the projectile are provided at the competition site, and the trebuchet team is given time to adjust the placement of their machine for distance and accuracy. Potential energy http://issuu.com/howtowithmanish/docs/how_to_the_trebuchet. 2. When you release the eraser, the battery falls and its potential energy is converted to kinetic energy of the eraser. Today, we practiced and then did our final assessment. Use one hand to pull down on the eraser. Use one hand to pull down on the eraser. As the arm swings, the sling holding the eraser slides off the hook and the eraser's kinetic energy causes it to fly through the air as a projectile. A trebuchet is a type of catapult, but it uses gravity to launch the projectile. Stem Projects. What happens if you move the pivot so it is exactly in the middle of the arm? If your trebuchet releases the projectile too soon, the projectile could fly upward or even backward. Take five popsicle sticks and cut one of them in half. It will act as a counter weight carrier. Popsicle Stick Catapult Ideas for Kids STEM Activity. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/2d\/Build-a-Trebuchet-Step-1Bullet1.jpg\/v4-460px-Build-a-Trebuchet-Step-1Bullet1.jpg","bigUrl":"\/images\/thumb\/2\/2d\/Build-a-Trebuchet-Step-1Bullet1.jpg\/aid4325264-v4-728px-Build-a-Trebuchet-Step-1Bullet1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"