Mechanical Properties of Solids and Fluids

Elasticity, stress-strain, viscosity, pressure, surface tension and fluid dynamics explained in a simple and intuitive manner.

1.Introduction to Mechanical Properties

A simple introduction to how solids and fluids behave when forces act on them.

Understand elasticity as the ability of a material to return to its original shape after a force is removed.

Learn stress as the internal force per unit area that develops inside a material when an external force acts on it.

Simple explanation of strain as the fractional change in shape or size of a material when stress is applied.

5.Hooke’s Law

Understand the linear relationship between stress and strain for small deformations using Hooke's Law.

6.Young’s Modulus

Learn how the stiffness of a solid material is measured using Young’s modulus.

Understand how materials respond to uniform pressure and how bulk modulus measures their resistance to compression.

8.Shear Modulus

Study shear deformation and how shear modulus measures a material’s resistance to shape changes.

9.Poisson’s Ratio

Learn how materials expand or contract sideways when stretched or compressed.

An easy explanation of viscosity as the internal friction in fluids that affects how easily they flow.

11.Surface Tension

Understand how the surface of a liquid behaves like a stretched membrane due to cohesive forces.

12.Angle of Contact

Learn how liquids interact with solid surfaces through the concept of angle of contact.

Simple explanation of how liquids rise or fall in thin tubes due to surface tension.

14.Pressure in Fluids

Understand fluid pressure, atmospheric pressure, and how pressure varies with depth.

15.Pascal’s Law

Learn how pressure applied at one point in a fluid is transmitted equally in all directions.

16.Archimedes’ Principle

Understand why objects float or sink using buoyant force and displacement of fluid.

Learn how density and buoyant force determine whether an object floats or sinks.

18.Fluid Dynamics

Beginner-friendly introduction to the study of how fluids move and the forces involved.

19.Continuity Equation

Understand how the flow rate of an incompressible fluid stays constant along a streamline.

20.Bernoulli’s Principle

Learn how pressure and speed in a moving fluid are related using Bernoulli’s equation.

21.Viscous Force and Stokes’ Law

Study the force experienced by objects moving through viscous fluids and how Stokes’ law explains it.