the length of an aluminium bar of length 80 cm increase by 1 mm on heating. what is the final temperature when initial temperature is 20 degree Celsius
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coefficient of linear expansion of Aluminum is = α = 23.1 * 10⁻⁶ /K
So ΔL = α L ΔT
ΔT = 1 *10⁻³ m / [ 23.1 * 10⁻⁶ /C * 0.80 m ] = 54.11 ⁰C
Final temperature = 20⁰ + 54.11⁰ = 74.11⁰ C
So ΔL = α L ΔT
ΔT = 1 *10⁻³ m / [ 23.1 * 10⁻⁶ /C * 0.80 m ] = 54.11 ⁰C
Final temperature = 20⁰ + 54.11⁰ = 74.11⁰ C
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