A-LevelPhysicsDeformation of solids9702/12 · May/June 2015 · Q231 Mark

The diagram represents a steel tube with wall thickness w which is small in comparison with the diameter of the tube. [Figure showing a tube under tension T, with wall thickness w.] The tube is under tension, caused by a force T, parallel to the axis of the tube. To reduce the stress in the material of the tube, it is proposed to thicken the wall. The tube diameter and the tension being constant, which wall thickness gives half the stress?

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Aw/2

B√2 w

C2w

D4w

✓ Correct answer

C: 2w

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Topic: Deformation of solids, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2015 Paper 1 Variant 2, question 23.

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