Physics
Physi Video Notes
cs Video Notes
Mechanical
Properties of Solids
Class 11ᵗʰ
, Solid vs Liquid Didn’t understand? Watch
the video (Click Here)
Solids Fluids
- Molecular motion: Highly restricted - Molecular motion: Brownian motion
- Intermolecular force: High - Motion of the molecules: Liquid < Gas
- Shape: Definite and fixed - Intermolecular attraction: Liquid > Gas
- Structure: Lattice - Structure: Not fixed
Ideal Solid and Real Solid
Ideal solids: Ideal Solids are theoretical constructs in physics and material
science. They are perfect in structure and behaviour.
Elasticity and Deformation: Ideal solids exhibit perfect elasticity, with no plastic
deformation or hysteresis under stress.
Perfectly Ordered Structure: Atoms or molecules are arranged in a flawless,
repeating pattern (crystal lattice) without defects.
Real solids: Real solids are materials found in nature or manufactured in
laboratories. Their properties and structures include imperfections.
Defects: May include point defects.
Realistic Elasticity: Includes plastic deformation, creep, and other irreversible
behaviours under stress.
Didn’t understand? Watch
Elasticity the video (Click Here)
Elasticity is the ability of a material to regain its original shape and size when
the deforming force acting on it is removed.
Perfectly Elastic Body: A body that completely regains its original shape and size
after the removal of a deforming force.
Perfectly Inelastic Body: A body that does not regain its original shape and size
after the removal of a deforming force, meaning it undergoes permanent
deformation.
Didn’t understand? Watch
Elastic behaviour of solids the video (Click Here)
Minimum potential energy (U₀):
It corresponds to the most stable configuration of atoms in a solid.
At equilibrium, the interatomic distance is l₀(natural length of the bond)
Physi Video Notes
cs Video Notes
Mechanical
Properties of Solids
Class 11ᵗʰ
, Solid vs Liquid Didn’t understand? Watch
the video (Click Here)
Solids Fluids
- Molecular motion: Highly restricted - Molecular motion: Brownian motion
- Intermolecular force: High - Motion of the molecules: Liquid < Gas
- Shape: Definite and fixed - Intermolecular attraction: Liquid > Gas
- Structure: Lattice - Structure: Not fixed
Ideal Solid and Real Solid
Ideal solids: Ideal Solids are theoretical constructs in physics and material
science. They are perfect in structure and behaviour.
Elasticity and Deformation: Ideal solids exhibit perfect elasticity, with no plastic
deformation or hysteresis under stress.
Perfectly Ordered Structure: Atoms or molecules are arranged in a flawless,
repeating pattern (crystal lattice) without defects.
Real solids: Real solids are materials found in nature or manufactured in
laboratories. Their properties and structures include imperfections.
Defects: May include point defects.
Realistic Elasticity: Includes plastic deformation, creep, and other irreversible
behaviours under stress.
Didn’t understand? Watch
Elasticity the video (Click Here)
Elasticity is the ability of a material to regain its original shape and size when
the deforming force acting on it is removed.
Perfectly Elastic Body: A body that completely regains its original shape and size
after the removal of a deforming force.
Perfectly Inelastic Body: A body that does not regain its original shape and size
after the removal of a deforming force, meaning it undergoes permanent
deformation.
Didn’t understand? Watch
Elastic behaviour of solids the video (Click Here)
Minimum potential energy (U₀):
It corresponds to the most stable configuration of atoms in a solid.
At equilibrium, the interatomic distance is l₀(natural length of the bond)
