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CAIE A-Level Physics AS 6.1.3 Hookes Law Questions

Apply Hooke’s law F = kx to relate force, extension and spring constant within the limit of proportionality.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Apply Hooke’s law F = kx to relate force, extension and spring constant within the limit of proportionality.

CAIE A-Level Physics AS 6.1.3 Hookes Law Questions question 1

[Maximum number: 1]

One end of a wire is attached to a fixed point. A force F is applied to the wire to cause extension x. The variation with F of x is shown in Fig. 5.1.

Fig. 5.1

Fig. 5.1

The wire has a cross-sectional area of 4.1×10−7 m24.1 \times 10^{-7} \mathrm{~m}^{2} and is made of metal of Young modulus 1.7×1011 Pa1.7 \times 10^{11} \mathrm{~Pa}. Assume that the cross-sectional area of the wire remains constant as the wire extends.

State the name of the law that describes the relationship between F and x shown in Fig. 5.1.

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