Question

Hooke’s law states that within elastic limit, ______

(a) stress is directly proportional to strain

(b) stress is inversely proportional to strain

(c) stress does not depend on strain

(d) stress is equal to strain

This question was posed to me in an international level competition.

The doubt is from Generalised Hooke’s Law in division Elements of Elasticity of Geotechnical Engineering I

Answer 1

Correct answer is (a) stress is directly proportional to strain

For explanation I would say: In the simplest form, the Hooke’s law states that within the elastic limit, stress is directly proportional to strain.

∴ Stress ∝ Strain.