Stress (MPa) Graph 1 - Stress/Strain plot 400 320 300 200 100 0 (a) 51.472kN (b) 205.89kN (c) 25735N (d) 57905N (e) None of the above A 0.1 (a) 0.1mm (b) 0.25mm (c) 15mm (d) 25mm (e) None of the above 200 140 100 V O 0.002 0.004 0.006 190 0.2 Strain Question 6: From the plot in Graph 1 determine the maximum load that can be sustained by a cylindrical specimen having an original diameter of 12.8mm: 0.3 Question 7: From the plot in Graph 1 determine the change in length of a specimen originally 250mm in length that is subjected to a tensile stress of 320MPa at point A: 0.4

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Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.