A metal wire $$$P$$$ that obeys Hooke's law is stretched within its limit of proportionality. (i) On Fig. 4.1, sketch the variation of tensile force $$$F$$$ in the wire with its extension $$$x$$$. Fig. 4.1 (ii) State the name of the quantity represented by the gradient of the line in Fig. 4.1. ................................................................................................................................. (iii) State the name of the quantity represented by the area under the line in Fig. 4.1. .................................................................................................................................

Physics

IGCSE&ALevel

CAIE

Exam No：9702_w24_qp_21 Year：2024 Question No：IGCSE&ALevelPhysics2024AS0453

Answer:

Knowledge points:

6.1.1 appreciate that deformation is caused by a force and that, in one dimension, the deformation can be tensile or compressive

6.1.2 describe the behaviour of springs in terms of load, extension, elastic limit, Hooke’s law and the spring constant (i.e. force per unit extension)

6.1.3 define and use the terms stress, strain and the Young modulus

6.1.4 describe an experiment to determine the Young modulus of a metal in the form of a wire

Answer:

Knowledge points:

Solution:

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