A-LevelPhysicsDeformation of solids9702/12 · Oct/Nov 2019 · Q181 Mark

The graph shows the effect of applying a force of up to 5.0 N to a spring. [Figure showing a graph of spring length/cm against force/N, starting at 10 cm for 0 N and rising linearly to 14 cm for 5.0 N] The spring obeys Hooke's law for forces up to 7.0 N. What is the total extension of the spring produced by a 7.0 N force?

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A4.2 cm

B5.6 cm

C15 cm

D20 cm

✓ Correct answer

A: 4.2 cm

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Topic: Deformation of solids, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2019 Paper 1 Variant 2, question 18.

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