City Guilds Model Questions Vol1 2021 Engineering Question 25
Practice objective / multiple choice question 25 from the 2021 City Guilds Model Questions Vol1 Engineering examination.
A steel rod 1.5 m long at \(20^{\circ}\text{C}\) is fixed at one end. Its coefficient of linear expansion is \(12\times10^{-6}\; \text{°C}^{-1}\). The free end is attached to a spring of stiffness \(200\;\text{kN m}^{-1}\) that is initially pre‑loaded with a tensile force of 50 N. The rod is uniformly heated to \(120^{\circ}\text{C}\). Find the total tensile force in the spring after heating (in newtons, nearest integer).
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About This Question
This is City Guilds Model Questions Vol1 2021 Engineering Question 25. It is one of the objective questions from the 2021 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Medium .
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