Quick questions on Materials: Hooke's law, stress, strain, the Young modulus and strain energy - OCR A-Level Physics A

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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State Hooke's law. [1 mark]

What is q2?

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A wire of area

1.0 \times 10^{-6}\ \text{m}^2

carries a load of

80\ \text{N}

. Find the stress. [1 mark]

What is q3?

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A spring of force constant

200\ \text{N m}^{-1}

is stretched by

0.050\ \text{m}

. Find the strain energy stored. [2 marks]

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