What magnitude does the modulus of elasticity typically have for mild steel________________?
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Answer: B. 2.1 X 106 kg/cm2
Explanation
The modulus of elasticity for mild steel is universally recognized and standardized around two point one times ten to the sixth kg/cm2. This large numerical value reflects the high stiffness of iron-carbon crystal lattices resisting elastic deformation under axial loads. Hooke law calculations for mild steel components rely directly on this precise elastic modulus constant to determine elongation. Modulus of elasticity, or Young modulus, measures the inherent stiffness of an isotropic material within its elastic deformation range. Converting units reveals that two point one times ten to the sixth kg/cm2 equals approximately two hundred gigapascals in SI units. The chemical composition of plain mild steel ensures consistent and predictable elastic stiffness across standard structural grades.
An elastic modulus of two point one times ten to the fifth kg/cm2 is lower by an order of magnitude and is incorrect. Values near two point one times ten to the seventh kg/cm2 overestimate mild steel stiffness by an incorrect magnitude factor. Fractional exponent options represent severe mathematical errors and do not correspond to any known engineering material properties.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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