Stretching a spring analysis (F=kx)
I can describe and calculate the properties of a spring using Hooke’s law.
Stretching a spring analysis (F=kx)
I can describe and calculate the properties of a spring using Hooke’s law.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- A spring is elastically deformed if it returns to its original shape after the applied force is removed
- A spring is inelastically deformed if it does not return to its original shape after the applied force is removed
- Elastic deformation is proportional to the force applied to stretch or compress a spring
- The spring constant (k) is the force needed to extend or compress an elastic object by one metre
- Force on a spring = spring constant × extension
Keywords
Directly proportional - A variable is directly proportional to another if it doubles or triples when the other one does the same.
Elastic deformation - The stretch of a spring that returns to its original shape when the stretching force is removed.
Inelastic deformation - The stretch of a spring as it is permanently stretched out of shape.
Spring constant - A measure of how stiff a spring is and how hard it is to stretch or compress.
Hooke’s Law - For elastic deformations, extension (or compression) is directly proportional to the force applied.
Common misconception
Pupils often think the bigger the spring constant, the more a spring stretches for a given force.
Provide opportunities for pupils to apply understanding that the spring constant describes the stiffness of a spring. The bigger the spring constant, the harder it is to stretch (or compress) the spring.
To help you plan your year 10 physics lesson on: Stretching a spring analysis (F=kx), download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 10 physics lesson on: Stretching a spring analysis (F=kx), download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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Starter quiz
6 Questions
Exit quiz
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