A-LevelPhysicsDeformation of solids9702/12 · Feb/Mar 2016 · Q181 Mark

A metal wire is stretched by a load. The force-extension graph is shown. [Figure 18.1] What is represented by the area under the whole graph?

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Athe change in gravitational potential energy of the wire

Bthe energy that would be released from the wire if the final load was removed

Cthe energy transferred into heat energy in the wire

Dthe work done in stretching the wire

✓ Correct answer

D: the work done in stretching the wire

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Topic: Deformation of solids, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Feb/Mar 2016 Paper 1 Variant 2, question 18.

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