World 2 · Pull It Until It Breaks · 11 min · PRO

Stiff, strong or tough?

Three words that are not synonyms

PRO · Materials Testing Lab

World 2: Pull It Until It Breaks is part of PRO

The first world of Materials Testing Lab is free. PRO opens the other 25 lessons in 6 worlds — simulations, quizzes and all.

Stress and strain
Hooke’s law and Young’s modulus
Yield, necking and fracture
Cracks and fatigue
Steel is iron with a pinch of carbon

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