Question

mechanical properties chapter main points ,please?

Answer 1

Explanation:

• Stress is of two types:

(i) Normal stress: It is defined as the restoring force per unit area perpendicular to the surface of the body. Normal stress is of two types: tensile stress and compressive stress.

(ii) Tangential stress: When the elastic restoring force or deforming force acts parallel to the surface area, the stress is called tangential stress.

• Strain

It is defined as the ratio of the change in size or shape to the original size or shape. It has no dimensions, it is just a number.

Strain is of three types:

(i) Longitudinal strain: If the deforming force produces a change in length alone, the strain produced in the body is called longitudinal strain or tensile strain. It is given as:

mechanical-properties-of-solids-cbse-notes-for-class-11-physics-2

(ii) Volumetric strain: If the deforming force produces a change in volume alone, the strain produced in the body is called volumetric strain. It is given as:

mechanical-properties-of-solids-cbse-notes-for-class-11-physics-3

(iii) Shear strain: The angle tilt caused in the body due to tangential stress expressed is called shear strain. It is given as:

mechanical-properties-of-solids-cbse-notes-for-class-11-physics-4

Answer 2

Answer:

I hope it will be help full for you