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A2 1 Deformation, Thermal Physics, Circular Motion, SHM and Gravity

Quick questions on Deformation of solids: Hooke's law, the Young modulus and strain energy - CCEA A-Level Physics

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 wire of length 2.0 m2.0\ \text{m} and cross-sectional area 1.0×10−6 m21.0 \times 10^{-6}\ \text{m}^2 extends by 1.0 mm1.0\ \text{mm} under a force of 50 N50\ \text{N}. Find the Young modulus. [3 marks]
What is q2?
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A spring of spring constant 200 N m−1200\ \text{N m}^{-1} is stretched by 0.10 m0.10\ \text{m}. Find the energy stored. [2 marks]
What is q3?
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Explain why a long thin wire is used when measuring the Young modulus experimentally. [2 marks]

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