Question

Hi please tell me answer of this question in easy way but Step-by-step I will add your answers in brain list but solve step by step

Answer 1

Temperature = 35.4 C

Step by step explanation:

It is given that the length of the rods = 20m = 2000 cm, temperature T = 18 C, and the distance between the two rods is 0.4 cm.

It is required to find the maximum temperature at which the bridge is still in a good shape.

The bridge will be in a good shape until the two rods expand by 0.2 cm each as the temperature increases. Therefore, let the total expansion be 0.4 cm (2*0.2 cm)

The formula of linear expansion is:

; where  is the expansion in the length,  is the length of the rod,  is the linear expansion coefficient of iron ()

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