A-LevelPhysicsDeformation of solids9702/12 · May/June 2022 · Q191 Mark
A metal wire obeys Hooke's law and has a Young modulus of 2.0 × 10¹¹ Pa. The wire has an original length of 1.6 m and a diameter of 0.48 × 10⁻³ m. What is the spring constant of the wire?
A7.2 × 10³ N m⁻¹
B2.3 × 10⁴ N m⁻¹
C2.9 × 10⁴ N m⁻¹
D9.0 × 10⁴ N m⁻¹
✓ Correct answer
B: 2.3 × 10⁴ N m⁻¹
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