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Use this equation to determineHow you are going to fire your projectiles!!!The momentum equation can help us to think about how a change in one of the two variables might affect the momentum of an object. We used science to test how far the catapults flung the items we chose. For this project, we used our engineering skills to actually build the popsicle stick catapults. Physics Concepts to help you build your catapultMomentumĭefinitionAll objects have mass so if an object is moving, then it has momentum - it has its mass in motionĭependant variables: how much stuff is moving, how fast the stuff is movingEquationmomentum of an object is equal to the mass of the object times the velocity of the object.Momentum = mass A catapult made out of popsicle sticks is the perfect kids’ activity for simple physics. You should have gotten an ideaabout how you are going to Structure your catapult by now…Use these concepts to youradvantage.We are going to learn about momentum next and this would help you with the concepts on firing your projectile Introduction Catapults were mighty handy for pirates in the golden age of piracy (during the 17th century). We think of all the mass as being concentrated at the centre of mass.Ĭentre of massLine ofactionPivotF Home Education Educational Resources Lending Library of Experiments Physics Kits Catapult (3-8) Airboats Alka-Seltzer Rockets Boat Building Bridge. Key concepts Physics Engineering Elastic potential energy Projectile motion. All objects have a point at which they balance, called the centre of mass. Therefore…Principle of Moments: If the clockwise moment = anticlockwise moment, the system is in equilibriumĪnticlockwiseClockwise2dd2FPivotF ĪnticlockwiseClockwise1.8 m0.8 mFPivot 40 N Ĭentre of MassIn Physics we find it a lot easier to think of objects as point masses. What force must he apply? AnswerQuestion 2 How can the force applied be reduced?Answer The main types of catapult are the trebuchet and the Mangonel. The stored energy comes from building mechanisms that use tension, torque and gravity.
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Introduction: Catapult engineering involves using stored energy to hurl a projectile without using any explosives. A ball held at some height above the ground has potential energy caused by gravity when the ball is dropped, it falls at an increasing rate, increasing its kinetic energy while decreasing its. A motorist has to undo the nut with a wheel wrench which is 0.40 m long. During our physics unit, I have students build craft stick catapults to help demonstrate Newtons Laws of Motion. Catapult Engineering The Physics of Siege Weapons STEM Club Resource Pack. Worked ExamplesQuestion 1 A wheel nut is tightened to a moment of 100 Nm. look at the picture: PerpendiculardistanceLine of action of forcemoment (newton metre, Nm) = force (newton, N)× perpendicular distance (metre, m) Physics Concepts to help you build your catapultThe Turning Effects of Forces How a Catapult Works: Catapult physics is basically the use of stored energy to hurl a projectile the payload, without the use of an explosive. If this product could really benefit your classroom, but you are not in a good financial situation to buy the product, please contact me and I will give you the product for free, no questions asked.Building a catapult:Physics Prior Knowledge Recapīuilding a Catapult: Physics Prior Knowledge Recap Physics Concepts:Turning Effects of ForcesMomentumīefore embarking on your journey for survival… Catapult Report By: Lauren Pernie & Kent Haskett 3rd Period Physics Blueprint/Design of our catapult. The team that has the most balls in the cup after a minute has passed is the winner.įor a Project Requiring More Calculations and Physics: Diagram of the activitys simple catapult. The relationship F m a is called Newtons second law of motion because it is a mathematical description of the relationship among force, mass and acceleration. The objective is to have your launching device gets as many balls as possible into your catching device in one minute. Catapults are one good way to learn about the relationship between force, mass and acceleration. Each team will be responsible for building a launching device (catapult) and a catcher. Students will be placed into teams consisting of two or three people. This is a 1-2 week engineering competition made for students to push their creativity and engineering abilities.