Theory of Structures

A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated to 100°C. If steel = 0.000012/C°, Esteel = 0.2 MN/mm², the tensile force developed at a temperature of 50°C, is_____.

  • A. 80 N/mm²
  • B. 100 N/mm 2
  • C. 120 N/mm²
  • D. 150 N/mm²
Answer: Option C.
Explanation: 

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