City Guilds Model Questions Vol1 2023 Engineering Question 16
Practice objective / multiple choice question 16 from the 2023 City Guilds Model Questions Vol1 Engineering examination.
A composite material is made by mixing material A and material B. Material A has a density of \(2.5\ \text{g/cm}^3\) and a Young's modulus of \(70\ \text{GPa}\). Material B has a density of \(8.0\ \text{g/cm}^3\) and a Young's modulus of \(200\ \text{GPa}\). The resulting composite has an overall density of \(3.5\ \text{g/cm}^3\) and an overall Young's modulus of \(93.6\ \text{GPa}\). Assuming the rule of mixtures applies linearly to both density and modulus, determine the volume fraction of material A in the composite. Then, for a block of the composite with a volume of \(0.20\ \text{m}^3\), calculate the mass of material A contained in the block. Give your answer in kilograms (to two decimal places).
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About This Question
This is City Guilds Model Questions Vol1 2023 Engineering Question 16. It is one of the objective questions from the 2023 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Medium .
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