A steel wire 2mm in diameter is just stretched between two rigid walls at 20°C. If the temperature falls to 10°C, find the tension in the wire. Linear coefficient of expansion of steel = 11 xx 10^(-6)//k and Y = 2 xx10^(11) N//m^(2)

A steel wire 2mm in diameter is just stretched between two rigid walls

1.	A steel wire 2mm in diameter is just stretched between two rigid walls at 20°C. If the temperature falls to 10°C, find the tension in the wire. Linear coefficient of expansion of steel = 11 xx 10^(-6)//k and Y = 2 xx10^(11) N//m^(2)
Answer» ANSWER :`69.12N`