A spring of unstretched length 0.10 m is suspended vertically from a support. A weight of 2.0 N is attached to the bottom of the spring and its length increases to 0.15 m . An additional weight of 4.0 N is then added to the bottom of the spring. The spring obeys Hooke's law.

Physics

IGCSE&ALevel

CAIE

Exam No：9702_s25_qp_14 Year：2025 Question No：18

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

Solution:

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A spring of unstretched length 0.10 m is suspended vertically from a support. A weight of 2.0 N is attached to the bottom of the spring and its length increases to 0.15 m . An additional weight of 4.0 N is then added to the bottom of the spring. The spring obeys Hooke's law.

Answer:

Knowledge points:

Solution:

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