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When an elastic material with Young’s modulus Y is subjected to stretching stress S, elastic energy stored per unit volume of the material is
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- YS/2
- S²Y/2
- S²/2Y
- S/2Y
Correct Option: C
Energy stored per unit volume =
| = | × stress × strain | |
| 2 |
| = | × stress × (stress/ Young's modulus) | |
| 2 |
| = | × stress²/ (Young's modulus) | |
| 2 |
| = | × stress²/ (Young's modulus) | |
| 2Y |
