"As the extension, so the force."

- Robert Hooke, 1678

Exam Board

Falling-Ball Viscometer

EdexcelRequired PracticalA Level

IAL Core Practical 2

Drop steel ball-bearings of different radii through glycerol to investigate how terminal velocity depends on ball size, then reason from your results to find the viscosity of the liquid.

Young's Modulus Wire

EdexcelRequired PracticalA Level

IAL Core Practical 3

Measure the extension of a long wire under increasing load to determine the Young modulus of the wire's material. Includes micrometer measurement of wire diameter and graph analysis.

Stress-Strain Explorer

EdexcelDemonstrationA Level

Material Properties Demonstration

Load copper, steel, glass and rubber samples to failure, record force and extension, then plot and annotate your own stress-strain curves on paper.