A-LevelPhysicsDeformation of solids9702/12 · Oct/Nov 2016 · Q221 Mark

Four solid steel rods, each of length 2.0 m and cross-sectional area 250 mm², equally support an object weighing 10 kN. The weight of the object causes the rods to contract by 0.10 mm. What is the Young modulus of steel?

A2.0 × 10⁸ N m⁻²

B2.0 × 10¹¹ N m⁻²

C8.0 × 10⁸ N m⁻²

D8.0 × 10¹¹ N m⁻²

✓ Correct answer

B: 2.0 × 10¹¹ N m⁻²

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Topic: Deformation of solids, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2016 Paper 1 Variant 2, question 22.

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