A square bar of size 10 mm x 10 mm and length 1000 mm is subjected to 200 N axial tensile force. The bar is made of mild steel having modulus of elasticity of 200 GPa. Find the strain energy density stored in the bar under this state of loading?
- A. 10 J/m³
- B. 20 J/m³
- C. 2 J/m³
- D. 5 J/m³
Answer: A. 10 J/m³