Question

The elastic potential energy of a strained body is:

• A. \(\text{stress} \times \text{strain}\)
• B. \(\text{stress} \times \text{strain} \times \text{volume}\)
• C. \(\frac{1}{2} \text{stress} \times \text{strain}\)
• D. \(\frac{1}{2} \text{stress} \times \text{strain} \times \text{volume}\)

Hint:

The elastic potential energy is related to the stress and strain in the material, and it is proportional to 1/2 of the product of stress and strain for small deformations.