A steel rod of sectional area 25 sq.mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated at 100°C. If α(steel) = 0.000012 °C, Esteel = 0.2 MN/mm2. The tensile force developed at a temperature of 50 °C is

Questions › Category: Civil Engineering › A steel rod of sectional area 25 sq.mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated at 100°C. If α(steel) = 0.000012 °C, Esteel = 0.2 MN/mm2. The tensile force developed at a temperature of 50 °C is
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A steel rod of sectional area 25 sq.mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated at 100°C. If α(steel) = 0.000012 °C, Esteel = 0.2 MN/mm2. The tensile force developed at a temperature of 50 °C is

a) 80 N/mm^2

b) 120 N/mm^2  (Ans)

c) 130 N/mm^2

d) 150 N/mm^2