What does “Hooke's law and elastic limit” actually mean in Mechanical Properties of Solids, and why does it matter for JEE?
For small deformation within the proportional limit, stress is proportional to strain. Beyond that range the graph need not remain linear, and beyond the elastic limit the body may not recover fully.
In simple words: For small deformation within the proportional limit, stress is proportional to strain. Beyond that range the graph need not remain linear, and beyond the elastic limit the body may not recover fully. Getting Hooke's law and elastic limit clear matters because JEE questions on Mechanical Properties of Solids usually test this idea directly, not just a formula you memorised.
Key point
Hooke's law and elastic limit
Common mistake
using Hooke's law up to fracture.
Memory tip
straight-line rule only inside the proportional range.
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