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The modulus of elasticity for a material is 200 GN/m2 and Poisson's ratio is 0.25. What is the modulus of rigidity ?
  • a)
    80 GN/m2
  • b)
    125 GN/m2
  • c)
    250 GN/m2
  • d)
    320 GN/m2
Correct answer is option 'A'. Can you explain this answer?
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Modulus of Rigidity:

Modulus of Rigidity, also known as shear modulus, is the ratio of shear stress to the corresponding shear strain within the elastic limit. It is denoted by G.

Formula:

G = (E / (2 * (1 + v)))

where, E = modulus of elasticity, v = Poisson's ratio

Given, E = 200 GN/m2 and v = 0.25

Calculations:

G = (200 GN/m2) / (2 * (1 + 0.25))

G = 80 GN/m2

Therefore, the modulus of rigidity for the given material is 80 GN/m2. Hence, option (a) is the correct answer.
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The modulus of elasticity for a material is 200 GN/m2 and Poisson's ratio is 0.25. What is the modulus of rigidity ?a)80 GN/m2b)125 GN/m2c)250 GN/m2d)320 GN/m2Correct answer is option 'A'. Can you explain this answer?
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