Question

Elastic strain energy of 10 J is stored in a loaded copper rod of cross-sectional area $2 times 10^{-4} m^2$ and length 0,2 in, Hie Young?? modulus for copper is 125 GPa. The load on the copper rod in kN is

• A. 16
• B. 30
• C. 40
• D. 50

Answer 1

Answer: (D)

50

Answer 2

Answer (d) 50