Another wire Q is made from a metal that has twice the Young modulus of the metal of wire P in (b). Wire $$$Q$$$ has the same volume as wire $$$P$$$ but has double the cross-sectional area of wire P. The two wires are extended by equal tensile forces within their limits of proportionality. State and explain how the extension of wire Q compares with the extension of wire P . ............................................................................................................................................... . ............................................................................................................................................... . ............................................................................................................................................... . ............................................................................................................................................... . .........................................................................................................................................

Physics

IGCSE&ALevel

CAIE

Exam No：9702_w24_qp_21 Year：2024 Question No：(c)

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:

Related Question