BRAINCAKESolid Materials
Revision notes for Solid Materials in Edexcel Physics (8PH0). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.
- Hooke's LawTensile forces cause materials to extend and compressive forces cause negative extension.
- Elastic Strain EnergyWork done = force × distance travelled in the direction of the force.
- Force-Extension and Force-Compression GraphsA force-extension graph shows how the extension of a sample changes as the tensile force on it increases.
- StressTensile or compressive stress is a measure of the force within a material sample taking into account the cross-sectional area.
- StrainTensile or compressive strain is a measure of the ratio of the extension to the original length.
- The Young ModulusThe Young modulus is the ratio of stress to strain.
- Stress-Strain Graph Metal WireIf a material is undergoing elastic deformation the graph is a straight line through the origin as the stress is directly proportional to the strain.
- Experiment to Measure the Young ModulusThe length and diameter of a wire about 1 metre long are measured.
- Properties of MaterialsEngineers use precise words to describe how materials behave under a force.
- Exam Style Question - 1Question A steel wire of original length 2.00 m and diameter 0.50 mm hangs vertically.
- Exam Style Question - 1Question A spring obeys Hooke's law.
- Exam Style Question - 1Question A steel cable of length 20 m and cross-sectional area 2.0 × 10-4 m2 supports a load of 3.0 × 104 N.
- Springs in SeriesTwo or more springs are said to be in series when they are connected end-to-end so as to act as a single spring Any external force applied to the…
- Springs in ParallelTwo or more springs are said to be in parallel when they are connected side-by-side so as to act as a single spring.
On the specification
- Topic 4: Materials