1.4.29 - Force-extension and force-compression graphs

A be able to draw and interpret force-extension and force-compression graphs b understand the terms limit of proportionality, elastic limit, yield point, elastic deformation and plastic deformation and be able to apply them to these graphs.

Use - force-extension and force-compression graphs to connect the rule to the data and decision in the question.

This matters because - force-extension and force-compression graphs determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - force-extension and force-compression graphs to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Force-extension and force-compression graphs is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.