Question
Download Solution PDFWhat is the SI unit of modulus of elasticity?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Stress: The restoring force per unit area set up inside a body produced by the application of a deforming force.
- Strain: The relative change in the shape of the body due to the stress.
- Elasticity: The property of a body by virtue of which the body can recover its original shape and size after removal of the deforming force.
- Scientist Hooke has given a law regarding this. The law is "Under elastic limit, stress is proportional to strain".
Young's modulus of elasticity (E) = stress/Strain
- The value of this modulus of elasticity is different for different materials.
- The SI unit of this is Nm-2 or Pascal. So option 1 is correct.
Elasticity constant is of three types:
| Elasticity constant name | Symbol | Formula |
| Young's modulus | Y | Longitudinal stress/Longitudinal strain |
| Bulk Modulus | K | Volume stress/Volume strain |
| Rigidity modulus | G | Tangential stress/ Tangential strain |
Last updated on May 31, 2025
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