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THE ELASTIC PROPERTIES OF SOLID

CONTENT

  1. The Concept of Elasticity
  2. Definitions of Elasticity
  3. Hooke’s Law
  4. Definition of Elastic Constant
  5. Verification or Demonstration of Hooke’s Law
  6. Definition of (i) Elastic Limit (ii) Yield Point (iii) Breaking Point (iv) Tensile Stress (v) Tensile Strain (vi) Young’s Modulus
  7. Worked Examples
  8. Work Done in an Elastic Material

 

The Concept of Elasticity

Solids tend to change their shape or size when sufficiently strong external forces are applied to them and to return to their original shape or size after the forces causing the change are removed. Solids which retain their shape or size after the force causing the change has been removed are said to be ‘elastic’, and this property of solids is called elasticity.

Definitions of Elasticity

(1) Elasticity is the ability of a substance to regain its original shape and size after being distorted by an external force.

(2) An elastic material is one that regains its original shape and size after the distorting external force has been removed.

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