ISRO Mechanical & Aerospace 2017 - Question 9

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Topic: Mechanics of Materials

Modulus of resilience for the material shown in the stress-strain diagram is

Figure for question 9, ISRO Mechanical & Aerospace 2017

  • A. 200 kN/m²
  • B. 100 kN/m²
  • C. 606.25 kN/m²
  • D. 12.29 MN/m²

Answer: B. 100 kN/m²

Explanation: Modulus of resilience is the area under the stress-strain curve up to the elastic limit. Area = 0.5 * stress * strain = 0.5 * 200 N/mm² * 0.001 = 0.1 N/mm² = 0.1 * 10⁶ N/m² = 100 kN/m².

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