2. Determine the increase in length of a steel bar whose length is 100 in, if the bar is heated from room temperature of 70°F to 500°F. Assume coefficient of thermal expansion α= 6.7×10-6/°F for steel.
Question
2. Determine the increase in length of a steel bar whose length is 100 in, if the bar is heated from room temperature of 70°F to 500°F. Assume coefficient of thermal expansion α= 6.7×10-6/°F for steel.
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Answer ( 1 )
T1 = 70 F
T2 = 500 F
L = 100 in
L = Lo + k*Lo (T – To).
L = 100 + 6.7*10^-6*100(500 – 70),
L = 100 + 0.2881 = 100.288 in