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Grade upto college level Thermal Physics

An aluminium flagpole is 33 m high. By how much does its length increase as the temperature increases by 15 C°?

Shane Macguire

11 Years agoGrade upto college level

1 Answer

Abu Nayeem

8 Years ago

The coefficient of thermal expansion for aluminum, α = 22.2(10)^(-6) m/m-K. Given a change in temperature, ΔT = 15 °C = 15 K, and a flag pole length of 33 meters, the total increase in length is:
ΔL = αLΔT = (22.2(10)^(-6) m/m-K)(33 m)(15 K) = 0.011 m = 11 mm

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