Safety note: Never aim projectiles at people or animals. What happens when you let the eraser go? Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Electrical Tape 5. If you have trouble with the trebuchet releasing the projectile at the right time, you can adjust the weight of the counterweight or remount the swing arm through a different hole. Popsicle stick Whipper Trebuchet 33,309 views Mar 21, 2019 374 Dislike Share Save NumaVIG 58.3K subscribers How to make mini Whipper Trebuchet out of popsicle sticks easy. Difficulty Medium. Electrical Tape Remove the eraser from the pencil and attach it to a small loop of string. The counter-weight uses the pull of gravity to provide the force necessary for the arm to swing upwards. Repeat until you have nine sets of tripled popsicle sticks. Make a counter weight by inserting heavy metal pieces/ stones (I used coins) in a plastic zip loc bag. Build a Popsicle Stick Catapult: build and experiment with a simple catapult made from wooden sticks and rubber bands to explore the physics at work in a catapult. All Togetheris the blog of the Society of Women Engineers. 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. The swing arm should turn freely on the axle without wobbling. I know you used that to attach the axle, but what did you use to attach the counterweight? This forms a crossbar and completes your trebuchet's frame. Mark the drill holes about 1/10 of the way down from the top. Cut a small section of milk shake straw, about one inch long. My passion is physics and mechanics and I want to be a Mechanical Engineer in the future. Final product must collapse to fit a 38 cm x 30 cm x 25 cm (15 in. The Science Buddies activity Build a Popsicle Stick Catapult shows you how to build a miniature catapult out of popsicle sticks and rubber bands. 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. When the weight falls, it pulls the launching arm up! Its up-to-date information and news about the Society and how our members are making a difference everyday. April 18th, 2018 - How to Make a Mini Trebuchet out of Popsicle Sticks The trebuchet is a medieval device not unlike a catapult that was used in warfare to hurl damaging object Marshmallow Catapults Squarespace April 22nd, 2018 - Marshmallow Catapults Talk with students first about what a catapult is and how BUILD INSTRUCTIONS 1 Glue two . Carefully cut two small notches on either side of a popsicle stick close to one end. Here is a Simple Way to Build a Trebuchet. Then the counterweight is allowed to fall, rotating the lever arm and converting that potential into kinetic energy in the projectile, which is flung through the air. Build a DIY Potato Cannon: PVC Spud Gun Instructions. :P, Strap-On Cleats for Ice and Snow Traction, Hollow Wood Surfboard - Plywood and Cedar. VDYoutube How To Make A Spoon Catapult Out Of Popsicle. Stick the ends of the A-frame pieces into the slots. Please rate this Instructable and follow me if you liked it :). This will leave a small notch for the pencil to rest in later. Eye Hooks Add Tip Note: There is more than one way to build the trebuchet described in this project. A trebuchet has a lever arm with a large, heavy counterweight on one end and a smaller projectile on the other end. Creativity in fantasy, how to write, make video games, play classical guitar and do creative things. Enjoy. This article was co-authored by wikiHow Staff. Kinetic energy And let it dry for a while to strengthen the structure. Glue one popsicle stick to one of the points of the triangle and glue the other end to where it bisects the opposing side. 6. In the Middle Ages armies would use them to hurl stones at castle walls. This will give the structure a firm base. A trebuchet has a counterweight that is raised and then dropped. The V notches that you cut help to keep the rubber band in place. Observations and results Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. It is okay if the eraser is resting on the ground and there is slack in the sling. Storm the Castle. When you pull down on the eraser, this causes the battery to lift up in the air, giving it (gravitational) potential energy. This should raise the counterweight up in the air. Try this project to build a miniature version! Then, making sure no people, animals or breakable objects are nearby, let go. 9. (I used coins - See step 10 on how to make a counter weight) 9. What are eye hooks? Trebuchet is another type of catapult uses gravity to launch or throw a projectile. Secure it in place with rubber bands. A well-built trebuchet should be able to hurl an eraser a few feet. You can modify your design based on your own ideas and the materials you have available. Handout is turned in on time and completed. When the counterweight falls, it will drag the eraser along the ground and then pull it up into the air. Step 10: Now it is time to test your trebuchet. $2.00. School Projects. Pinterest. Analytical cookies are used to understand how visitors interact with the website. Create a structure as shown below. Remember that there is no single correct way to build the trebuchet. These can be 1/2 the length of either the uprights or of the long base pieces. -John ] Josh 7/16/2005 at 8:30 pm Then attach a popsicle stick across the two sticks fanning out so as to join them. (The bowl on an ice cream scoop would work well for a smaller-sized catapult.) Share it with us! We also use third-party cookies that help us analyze and understand how you use this website. Today, we continued practicing shooting our trebuchet. This catapult works by storing elastic potential energythe type of energy you get from stretching something such as a rubber band or a springand rapidly converting it to kinetic energy (the energy of motion) of a projectile (in that case a cotton ball). When the auto-complete results are available, use the up and down arrows to review and Enter to select. If the axle extends past the frame, you may wish to affix cotter pins or caps to its ends to keep it from slipping out when you launch projectiles. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. I actually used washers. You also have the option to opt-out of these cookies. When the counterweight is raised up, it has lots of gravitational potential energy. Popsicle sticks are made from wood, and the glue you need on wood needs to be sturdy and long-lasting. How to Make a Trebuchet. Hang the battery from the notches in the popsicle stick. Step 11: Assemble the base and the support braces, then attach the uprights and braces to the base pieces. % of people told us that this article helped them. The length of the lever arm: Both the overall length and the ratio between the distance from the pivot to the counterweight and the pivot to the sling. There is a pin to hold it in place, and it's attached to a string you pull to launch the trebuchet. Stick the ends of the A-frame pieces into the slots. Start out by building the two side A-frame pieces. (We do not recommend using glue for this stepthat way you can remove the crossbar and swap out the arm to make changes.). Washers 8. A trebuchet has a lever arm with a large, heavy counterweight on one end and a smaller projectile on the other end. A trebuchet to demonstrate at a Renaissance faire could be several times larger than this, if you have sufficient space to launch its projectiles, but youd have to design it to be taken apart for transport and reassembled on site unless you have a pickup or trailer to haul it around in. 3. We were helped by other students as we have said in previous posts. Ben Finio is a senior staff scientist at Science Buddies and a lecturer at the Cornell University Sibley School of Mechanical and Aerospace Engineering. Now you might need to tinker with your trebuchet in order to get the best launch. You should be able to tinker with your design a bit to get your eraser to launch. "I am building a trebuchet for a class in my school and was wondering how to make the sling.". 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. Punch a hole in this stick halfway through. What if you glue multiple popsicle sticks together to make a longer arm? Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. Think of this as an engineering design projectthere is no single right answer or correct way to build the trebuchet. It is okay if the eraser is resting on the ground and there is slack in the sling. It does not store any personal data. When you release the eraser, the battery falls and its potential energy is converted to kinetic energy of the eraser. The straw and pencil form a pivot and should allow the arm to rotate. For our project, we were allowed to build a trebuchet of any size that we wanted. Depending on exactly how you built your trebuchet, the results you see will vary. Knowledge awaits. 3 Ways to Build a Basic Catapult wikiHow. Feed the straight end of the hanger through the first hook on the base, then through the front hook on . Don't get discouraged if at first your trebuchet launches the eraser straight up in the air or fails to release it at all. [bs_slideshow] Hurling objects at long distances with a catapult or trebuchet isn't anything new (they were being used in their modern form since the 4th century BC) but it sure is fun and certainly satisfying when they actually hit a target. Built with Popsicle sticks, a binder clip, bottle cap and hot glue, this DIY Catapult will shoot distances of around 20 feet! http://www.stormthecastle.com/trebuchet/how-to-make-a-trebuchet-out-of-popsicle-sticks.htm This site helped us make the model of our trebuchet from popsicle sticks, and we actually used their measurements on a greater scale to make our larger project. Thanks.". This item does not include instructions for students on how to . The tuning section gave us a ton of advice on how to fix problems and adjust our range. {"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":"