Deformation of solids

What you'll learn

• Understand that deformation is caused by tensile or compressive forces.
• Understand and use the terms load, extension, compression and limit of proportionality.
• Recall and use Hooke’s law.
• Define and use the terms stress, strain and the Young modulus.
• Describe an experiment to determine the Young modulus of a metal in the form of a wire.
• Understand and use the terms elastic deformation, plastic deformation and elastic limit.
• Determine the elastic potential energy of a material deformed within its limit of proportionality from the area under the force–extension graph.
• Recall and use Ep = 1/2Fx = 1/2kx^2 for a material deformed within its limit of proportionality.

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