What is difference between shear stress and normal stress

Question

Accepted Answer

Shear stress is the force applied parallel to the surface, while normal stress is the force applied perpendicular to the surface.

Shear stress occurs when two forces act parallel to each other but in opposite directions, causing the object to deform or twist.
Normal stress occurs when a force is applied perpendicular to the surface, causing the object to compress or stretch.
Shear stress is commonly seen in cutting or slicing actions, while normal stress is seen in compression or tension situations.
Shear stress is measured in units of force per unit area, while normal stress is measured in units of pressure.
Both types of stress are important in engineering and materials science, as they can affect the strength and durability of materials.

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