Problem 11.2. A steel rod has a length of exactly 0.2cm at 30°C. What will be Its length at 60°C?
A steel rod has a length of exactly 0.2cm at 30 °C what will be Its length at 60°C?
Data. Solutions
L1 = 0.2cm. ΔT =60 - 30 =30°c 30k
T1 =30°c. L2= L1{1+ α Δ T}
T2= 60°c. L2 =0.2{1+11×10-⁶ ×30}
α = 11 X 10-⁶ k-¹ L2 =0.2 {1+0.00033}
L2= ? L2 =0.2 ×1.00033
Answer is L2 =0.200066cm
