In a shear stress-strain relationship, what does the slope of the linear portion represent?
Correct Answer: Shear modulus of the material
- Step 1: Understand that shear stress is the force applied parallel to a surface.
- Step 2: Recognize that shear strain is the deformation that occurs due to this stress.
- Step 3: Know that a graph can be made with shear stress on the vertical axis and shear strain on the horizontal axis.
- Step 4: Identify the linear portion of the graph, which shows a straight line relationship between shear stress and shear strain.
- Step 5: Understand that the slope of this straight line indicates how much shear stress is needed for a certain amount of shear strain.
- Step 6: Realize that this slope is called the shear modulus, which is a measure of the material's stiffness.
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