Problem 5. (20 points) A 20-cm-long rod with a diameter of 0.250cm is loaded with a 5000N weight. If the diameter decreases to 0.210cm, determine a. (10 points) the engineering stress and strain at this load. b. (10 points) the true stress and strain at this load. Problem 5. (20 points) A 20-cm-long rod with a diameter of 0.250cm is loaded with a 5000N weight. If the diameter decreases to 0.210cm, determine a. (10 points) the engineering stress and strain at this load. b. (10 points) the true stress and strain at this load