Define springy12/11/2022 ![]() ![]() The tighter the spring, the harder it is to deform, the Pushing or pulling force to stretch a spring, you're usingĪ force over a distance so, in physics terms, you're doing work and Springs are great for storing or absorbing energy. In the spring and you can use it again later. It takes energy to deform a spring (change its shape): that energy is stored Photo: Try bending a spring out of shape-and you can feel theįorce you have to use to keep it there. Spiral spring by a small amount and the entire spring can stretch or Little bit more: the more windings of metal a spring has, the easier Once the spring is formed, it's easy to change its shape a You'll discover if you try bending a paperclip), you have to workĪ little bit to bend the metal into shape, but it's nowhere near as difficult.Īs you bend the wire, you use energy in the process and some of that energy is stored in the Lattice-and that's relatively hard to do. Involves tugging atoms out of their position in the metal's crystal When the material is in its original form, stretching it Metal, in the form of a wire, was so reluctant to change shape in the first place? Spring really easy to stretch and squeeze when the same piece of Why has this once-stubborn piece of metal suddenly become so cooperative? Why is a Photo: It's easy to make a simple coil spring from a paperclip. Now pull or push it with your fingers and you'llįind you can stretch and squeeze it quite easily. Coil itĪround a pencil and with a bit of effort you can make yourself a small but perfectlyįunctioning spring. With your fingers, it's extremely difficult to stretch it. Long-something like a long paperclip you've unwrapped. Imagine you have a piece of straight steel wire about 10cm (4 in) Titanium shape-memory alloy called nitinol, Eyeglass frames are often made from a nickel. Some alloys have a property called shape-memory, which means they're naturally Stainless steel or tough alloys such as bronze. Means they have to be made from materials such as Work effectively only if they're stiff enough to resist a pulling force and durableĮnough to be stretched many times without breaking. Paper or orange peel!-but the kinds of springs we use in machines You can make a spring out of more or less anything-even Depending on how a spring is made, itĬan work in the opposite way too: if you squeeze it, it compressesīut returns to its original length when the pushing force is removed. ![]() You don't stretch it too much) returns exactly to its original length It gets longer when stress is applied but (providing Original shape when you let it go again (remove the force). Stretches when you pull it (apply a force) and goes back to its You'll be surprised how springy this spring is!Ī typical spring is a tightly wound coil or spiral of metal that Then simply cut round the line with a pair of scissors. Photo: Make a paper spring by drawing a spiral on some paper or card. ![]()
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