State of Matter

Volume or Bulk modulus: Within the elastic limit, the ratio of volume stress to volume strain is constant. This constant is called volume or bulk…

Moduli of Elasticity We get from Hooke’s law that within elastic limit the ratio of stress and strain is a constant. This constant is called…

Young’s modulus is a mechanical property that measures the stiffness of a solid material. It defines the relationship between stress and strain in a material…

Rigidity modulus Within the elastic limit, the ratio of the shearing stress and shearing strain is constant. This constant is called rigidity modulus. It is…

Relation between Stress–Strain The magnitude of the action or reaction per unit area of the object is called stress. That means, stress is measured by…

Hooke’s Law Famous scientist Robert Hooke observed close relation between stress and strains. Is 1678 he expressed this relation by a law. It is called…

Types of stresses Longitudinal stress: If the stress is normal to the surface, it is called normal stress. Stress is always normal in the case…

Stress: If an external force is applied on an object, then according to Newton’s third law of motion a reaction force is developed in the…

Shearing strain: If due to the action of the applied force the shape of an object changes but not the volume or if the object…

Volume strain: Due to the application of external force, if the volume of an elastic body is changed without changing its shape, the strain is…