Question
Physics Question on mechanical properties of solids
A stretched wire of a material whose Young's modulus Y = 2 × 1011 Nm-2 has Poisson's ratio of 0.25. Its lateral strain εl = 10-3. The elastic energy density of the wire is
A
1 × 105 Jm-3
B
4 × 105 Jm-3
C
8 × 105 Jm-3
D
16 × 105 Jm-3
Answer
16 × 105 Jm-3
Explanation
Solution
The correct answer is (D) : 16 × 105 Jm-3.