Question
the length of an aluminium bar of length 80 cm increases by 1 mm on heating. What is the final temperature of the bar if it was initially at temperature 20 degree celsius? coefficient of linear expansion of aluminium =25*10-6/ degree celsius
Answers
Henry
(T-20)oC * 25*10^-6m/oC = 10^-3m.
25*10^-6T - 5*10^-4 = 10^-3
25*10^-6T = 1.5*10^-3
T = 0.06*10^3 = 60 oC.
25*10^-6T - 5*10^-4 = 10^-3
25*10^-6T = 1.5*10^-3
T = 0.06*10^3 = 60 oC.