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Unit of stress in SI unit is (a) kg/mm² (b) N/m² (c) ksi (d) ksc
By BYJU'S Exam Prep
Updated on: September 25th, 2023
The unit of stress in the SI unit is N/m². Internal resistance to external changes like force, bending, torsion, etc., stress is a physical quantity that describes the internal forces that adjacent particles of a continuous material impose on one another.
- It might have tensile or compressive properties.
- SI unit of stress is N/m² or Pa.
Table of content
What is Stress?
Stress is “The restoring force per unit area of the material”. It is a tensor quantity that is written by the Greek letter σ. Measured using N/m2 or Pascal. Mathematically written as –
σ = F/A
Where,
- F = restoring force in Newton or N.
- A =area of cross-section in m2.
- σ = stress in N/m2 or Pa.
Types of Stress
Stress is considered to be Normal when the direction of the force deforming is perpendicular to the body’s cross-sectional area.
When two cross-sectional areas of the cylinder are exposed to opposite and equal forces the stress experienced is known as longitudinal stress.
Summary:
Unit of stress in SI unit is (a) kg/mm² (b) N/m² (c) ksi (d) ksc
N/m² is the SI unit of stress. It is the internal resistance to external forces like bending, force, torsion, etc.
