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ScotlandEngineering ScienceQuick questions

Area 3: Mechanisms and structures

Quick questions on Materials: stress, strain and Young's modulus - SQA Higher Engineering Science

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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A force of 5000 N acts on an area of 25 mm225\ \text{mm}^2. Find the stress in MPa. [2 marks]
What is q2?
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A 2 m rod stretches by 1 mm under load. Find the strain. [2 marks]
What is q3?
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A material fails at 360 MPa and a factor of safety of 6 is used. Find the safe working stress. [1 mark]

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