part one A steel railroad track has a length of 26 m when the temperature is −3◦C. What is the increase in the length of the rail on a hot day when the temperature is 38 ◦C? The linear expansion coefficient of steel is 11 × 10− 6 (◦C)−1. Answer in units of m. THE ANSWER WAS 0.0117 I need help on part 2: Suppose the ends of the rail are rigidly clamped at −3◦C to prevent expansion.An automobile tire having a temperature of Calculate the thermal stress in the rail if its temperature is raised to 38◦C. Young’s modulus for steel is 20 × 1010 N/m2. Answer in units of N/m2.
