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A steel rod has an original length of 2 metres ... - SS2 Physics Heat and Thermodynamics Question

A steel rod has an original length of 2 metres. If its coefficient of linear expansion is 12 × 10-6 /°C and it is heated by 100°C, what will be its new length?

ΔL = α x L x ΔT = (12 × 10-6 /°C) x (2 metres) x (100°C) = 0.024 metres

New length = Original length + ΔL = 2 metres + 0.024 metres = 2.024 metres

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