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What is understood with the term Young's modulus of Elasticity? A) The amount of force required to produce a unit area in a tensile test specimen B) The stress in a material, provided that the limit of proportionality is not exceeded C) The ratio of the deformation of the specimen to the application of an external force D) A ratio of the deformation because of the application of an external force - NSC Mechanical Technology Automotive - Question 1 - 2017 - Paper 1
Question 1
What is understood with the term Young's modulus of Elasticity? A) The amount of force required to produce a unit area in a tensile test specimen B) The stress in a... show full transcript
Worked Solution & Example Answer:What is understood with the term Young's modulus of Elasticity? A) The amount of force required to produce a unit area in a tensile test specimen B) The stress in a material, provided that the limit of proportionality is not exceeded C) The ratio of the deformation of the specimen to the application of an external force D) A ratio of the deformation because of the application of an external force - NSC Mechanical Technology Automotive - Question 1 - 2017 - Paper 1
Step 1
What is understood with the term Young's modulus of Elasticity?
Answer
Young's modulus of Elasticity is defined as the ratio of stress to strain in a material during elastic deformation. It provides a measure of the stiffness of a material. In mathematical terms, if
- Stress () is defined as the force applied per unit area, and
- Strain () is the relative change in shape or size, then the Young's modulus (E) can be expressed as:
This relationship holds true as long as the material remains within its elastic limit, before yielding occurs.