Q. A brass wire 1.8m long at 270C is held taut with little tension between two rigid supports. If the wire is cooled to a temperature of -390C, what is the tension developed in the wire if the diameter is 2.0 mm? Coefficient of linear expansion of brass = 2.0 × 10-5 0C-1, and Young’s modulus of brass = 0.91 × 1011 N/m2. (CBSE)
Aditya Bhatt Answered question 22 January 2024
