Engineering Board Exam Reviewer · Strength of Materials · easy

In strength of materials, stress is defined as:

1. The change in length per unit original length
2. The internal resisting force per unit area of a cross section
3. The ratio of lateral strain to axial strain
4. The energy stored per unit volume

Answer

B. The internal resisting force per unit area of a cross section

Solution

Stress ( = P/A for axial loading) is the intensity of internal force acting on a unit area of a cross section.

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