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The three types of deformation of solids with which we will concern
are discussed in the following sections.
- Stress: is a measure of the force required to cause
- Strain: is a measure of the degree of deformation.
- Elastic Modulus: the ratio of stress to strain:
The elastic modulus determines the amount of force required per
unit deformation. A material with large elastic modulus is
difficult to deform, while one with small elastic modulus is easier
elasticmodulus = .