The unit mechanical properties of matter has got 40 periods.
- Elasticity of solids (10 periods)
- Tension and extension
- Load - extension graph
- Tensile stress
- Tensile strain
- Young's modulus
- Stress - strain graph
- Hooke's law
- Determination of Young's modulus of a metal using a wire
- Energy stored in a stretched string
- Viscosity (15 periods)
- Viscous force
- Coefficient of viscosity \[ F = A \eta \, (v_1 - v_2) / d \]
- Poiseuille's equation for a fluid flow
- Conditions of validity
- Correctness of the equation through dimensional analysis
- Determination of coefficient of viscosity by using Poiseuille's formula
- Motion of an object through viscous media
- Force acting on a spherical object
- Terminal velocity
- Stroke's law
- Correctness of formula through dimensional analysis
- Derivation of expressions for terminal velocity
- Object moving upwards
- Object moving downwards
- Surface tension (15 periods)
- Definition of surface tension
- Angle of contact
- Relationship between nature of the liquid meniscus and the angle of contact
- Free surface energy
- Expression for the work done in increasing the surface area of a liquid film isothermally
- Relationship between surface energy and surface tension
- Expression for pressure difference across a spherical meniscus
- Capillary rise
- Expression for capillary rise
- Determination of surface tension
- Using a microscope slide
- Capillary rise method
- Jaegar's method
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