PhysicsCode 9702
Stress and strain
What this topic asks you to be able to do
- appreciate that tensile or compressive forces bring about deformation (forces and deformations are taken to act in one dimension only)
- appreciate and apply the vocabulary of load, extension, compression and limit of proportionality
- recall and apply Hooke’s law
- recall the spring constant formula k = F/ x and use it
- define stress, strain and the Young modulus, and make use of these terms
- describe how to find the Young modulus of a metal by an experiment on a length of wire