A-LevelPhysicsDeformation of solidsOct/Nov 2024Paper 1 Q211 Mark
Four solid steel rods equally support an object weighing 10 kN. Each rod is of length 2.0 m and cross-sectional area 250 mm². The weight of the object causes the rods to contract by 0.10 mm. The rods obey Hooke's law. What is the Young modulus of steel?
A2.0 × 10⁸ Nm⁻²
B2.0 × 10¹¹ Nm⁻²
C8.0 × 10⁸ Nm⁻²
D8.0 × 10¹¹ Nm⁻²
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The correct answer is B. This question tests the candidate's understanding of deformation of solids within the Physicssyllabus. The examiner's mark scheme requires...
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