### Physics Module 2

Physics is a subject requires understanding than memorizing. Understand the basic principles in this subject will help you to understand the other modules.
We have posted video series below to for self studying purpose. This video series are complied EASA part 66 module 2 syllabus. We hope the viewers will find our webpage useful.
Model Questions
2.1 Matter
Nature of matter: the chemical elements, structure of atoms, molecules;
Chemical compounds.
States: solid, liquid and gaseous;
Changes between states.

2.2 Mechanics
2.2.1 Statics
Forces, moments and couples, representation as vectors;
Centre of gravity.
Elements of theory of stress, strain and elasticity: tension, compression, shear and torsion;
Nature and properties of solid, fluid and gas;
Pressure and buoyancy in liquids (barometers).
2.2.2 Kinetics
Linear movement: uniform motion in a straight line, motion under constant acceleration motion under gravity);
Rotational movement: uniform circular motion (centrifugal/ centripetal forces);
Periodic motion: pendular movement;
Simple theory of vibration, harmonics and resonance;
Velocity ratio, mechanical advantage and efficiency.
2.2.3 Dynamics
(a) Mass
Force, inertia, work, power, energy (potential, kinetic and total energy), heat, efficiency;
(b) Momentum, conservation of momentum;
Impulse;
Gyroscopic principles;
Friction: nature and effects, coefficient of friction (rolling resistance).
2.2.4 Fluid dynamics
(a) Specific gravity and density;
(b) Viscosity, fluid resistance, effects of streamlining;
effects of compressibility on fluids;
Static, dynamic and total pressure: Bernoulli’s Theorem, venturi.

2.3 Thermodynamics
(a)
Temperature: thermometers and temperature scales:
Celsius, Fahrenheit and Kelvin; Heat definition.
(b)
Heat capacity, specific heat;
Heat transfer: convection, radiation and conduction;
Volumetric expansion;
First and second law of thermodynamics;
Gases: ideal gases laws; specific heat at constant volume and constant pressure, work done by expanding gas;
Isothermal, adiabatic expansion and compression, engine cycles, constant volume and constant pressure, refrigerators and heat pumps;
Latent heats of fusion and evaporation, thermal energy, heat of combustion.

2.4 Optics (Light)
Nature of light; speed of light;
Laws of reflection and refraction: reflection at plane
surfaces, reflection by spherical mirrors, refraction, lenses;
Fibre optics.

2.5 Wave Motion and Sound
Wave motion: mechanical waves, sinusoidal wave motion,
interference phenomena, standing waves;
Sound: speed of sound, production of sound, intensity, pitch and quality, Doppler effect.
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