Place the wood slide on the table with the glued side down. Let the glue dry (this may take a few hours, depending on the humidity) and then take the pieces of tape off. ![]() Try to prevent the glue from leaking through to the other side. Place the taped dowels on the table and then carefully glue them together with wood glue.The tape will temporarily hold them together. Use clear tape to tape the dowels together at both ends. Place the dowels evenly next to each other and make sure the ends are flush (lined up).You are going to use the two wooden dowels to make a slide on which the magnets and balls will sit on and move down.Keep them away from small children, pets, credit cards, and pacemakers. Adult supervision is recommended when using them. What is conservation of momentum and what are Newton's laws of motion?.What is the difference between velocity and acceleration?.What is a magnet and what are some magnetic materials?.The Gauss rifle is not onlyĪ great toy for demonstration, but also a cool way to gain a whole lot of physics knowledge. Travels will depend on how fast the ball was going when it was launched, as well as on earth's gravitational force-the force that pulls the ball towards the ground-which will eventually pull the ball down. Velocity of the final ball bearing depends on the number of magnet stages. So how fast is the final ball bearing going when it leaves the launcher? What is its velocity? Howįar will it go? In this project, you will answer these questions and look at how the The only difference is that the ball bearing from the previous magnet stage gives the second magnet more energy than the ball bearing that started the chain reaction. In a launcher with more than one magnet stage, the magnetic field from the second magnet attracts this last ball bearing, the ball bearing accelerates toward the second magnet, and the process starts again. The ball bearing then hits the ball bearing next to it and momentum keeps getting transferred until the last ball bearing launches off. Then transfers the momentum from the starter ball to the first ball bearing on opposite side of the magnet. The magnet, it transfers its energy and momentum (a quantity that depends on both mass and velocity) to the magnet. ![]() The ballīearing accelerates (meaning it gains speed) toward the magnet due to the magnetic force acting on it. Gets closer to the neodymium magnet, the magnetic force pulls the ball toward the magnet. So how does a Gauss rifle work? When you give the starter ball a slight nudge, it moves forward. Watch the video to see a Gauss rifle in action. This starts a chain reaction that ends with the last ball bearing being ejected from the launcher. To get the Gauss rifle to launch a ball bearing, the starter ball rolls toward the first magnet stage and then hits the first magnet. The first magnet stage in this project will have another ball bearing on its other side, which we will call the "starter" ball. A magnet stage is a magnet with several ball bearings touching it on one side. Don't worry the accelerator is not used to shoot things but to demonstrate physics principles like magnetism, and others that are discussed below.Ī Gauss rifle is made up of at least one magnet stage, but it could have several successive magnet stages. This setup is named after Carl Gauss, who discovered the equations that describe magnetic accelerators like this one. In this project, you will see a magnetic field at work and use it to make a neat toy called a Gauss rifle. ![]() You might be thinking, "Great, magnets have magnetic fields, so what? What kinds of things can I do with magnets, other than just sticking them to stuff?" Well, it turns out that magnetic fields are used in all kinds of things, like circuits, motors, compasses, and MRI equipment. ![]() To learn more about magnets, check out the Science Buddies Electricity, Magnetism, & Electromagnetism Tutorial. It can be attractive (meaning it attracts or pulls on magnetic materials or other magnets) or repulsive (meaning it repels or pushes away other magnets). Magnitude (meaning it can be strong or weak) and a direction. Have you ever played with magnets, sticking them together and pulling them apart? Maybe you have seen how magnets attract paper clips and pins? Have you ever felt that tug when you tried to remove something from the magnet? If you have, then you have experienced the effects of magnetic fields.Ī magnetic field creates a force (a push or a pull) on other magnets or magnetic materials in the field.
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