Cross-Sectional Dimensions of Steel Rod to Elongate 1-mm when Subjected to 8,000 kg of Tension Force Date of Exam November 2016 Subject Structural Engineering and Construction Problem A tensile load of 8000 kg elongates a 1-m long square rod by 1 mm. Steel modulus of elasticity is 2 × 10^{6} kg/cm^{2}. What is the dimension of a side of the rod? A. 5 cm C. 2 cm B. 1 cm D. 4 cm Answer Key Click here to show or hide the answer key [ C ] Solution Click here to expand or collapse this section $\delta = \dfrac{PL}{AE}$ $0.1 = \dfrac{8,000(100)}{x^2 (2 \times 10^6)}$ $x^2 = 4$ $x = 2 ~ \text{cm}$ ← Answer: [ C ] Category Strength of Materials Mechanics of Materials Axial Deformation Tension Rod Log in or register to post comments