2 years ago
how do you conduct the Younge's modulus experiment
its dealt with in waves AS physics
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The Young Modulus, E is a material property that describes its stiffness and is therefore one of the most important properties in engineering design.
Several experimental setups can be used but the simplest is with a table top setup with a wire (steel or copper) clamped at one end and running on a pulley at the other to hang it doen the side of the table where you can attach a weight.
An alternative setup is the hanging wires method with one support wire and one test wire.
Use a micrometer to measure the area of your wire in 3-4 different places and take an average to get rid of random errors.
The wire is loaded with incrementally heavier loads and the extension is measured.
Assign an amount in Newtons to your weights for example 1 N= 100 g or something like that and then follow that principle to do a table. Remember to also unload the weights to ensure no plastic deformation has taken place and that Hooke's law is still being obeyed. Finally plot a graph of stress against strain and find the gradient to give you the young modulus.
Make sure you use a long thin piece of wire as then extensions are more measurable that way. If you're using something like copper, you can perhaps use a ruler to measure the extensions but with material like steel, you would need a vernier because the extension is too small to be measured with a ruler.
Several experimental setups can be used but the simplest is with a table top setup with a wire (steel or copper) clamped at one end and running on a pulley at the other to hang it doen the side of the table where you can attach a weight.
An alternative setup is the hanging wires method with one support wire and one test wire.
Use a micrometer to measure the area of your wire in 3-4 different places and take an average to get rid of random errors.
The wire is loaded with incrementally heavier loads and the extension is measured.
Assign an amount in Newtons to your weights for example 1 N= 100 g or something like that and then follow that principle to do a table. Remember to also unload the weights to ensure no plastic deformation has taken place and that Hooke's law is still being obeyed. Finally plot a graph of stress against strain and find the gradient to give you the young modulus.
Make sure you use a long thin piece of wire as then extensions are more measurable that way. If you're using something like copper, you can perhaps use a ruler to measure the extensions but with material like steel, you would need a vernier because the extension is too small to be measured with a ruler.
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