Mechanical Science Notes

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Mechanical Science is offered for college students pursuing engineering courses. Its purpose is to equip learners with the basic concepts of engineering science. Download free KNEC Mechanical Science notes by clicking on the notes below.

Topics Covered


  • Definition
  • Resolution of forces
  • Statement and application of theorems


  • Definition of a moment
  • Principles of moments
  • Calculation of moments and reaction on beams
  • Couples
  • Engineering examples


  • Nature of Friction
  • Laws of dry friction
  • Calculation of limiting friction force for a pull/push parallel to the surface
  • Calculation of pull/push applied at an angle to the horizontal surface
  • Definition of angle of friction
  • Calculation of coefficient of friction
  • Advantages and disadvantages of friction


  • Definitions
  • Laws of motion
  • Calculations of velocity, acceleration and distance covered
  • Using graphs of velocity-time and displacement-time

Work, Energy, and Power

  • Definitions
  • Calculation on work, energy and power


  • Definitions
  • Problems on simple machines
  • Problems on levers
  • Laws of machine


  • Gas Laws
  • Engineering examples
  • Simple problems


  • Definition of heat
  • Simple thermometer
  • Heat capacity
  • Definition of the latent heats
  • Solve simple problems on heat


  • Definitions
  • Simple measurements of density
  • Archimedes principles
  • Simple calculations


  • Simple calculations on pressure
  • Simple barometer
  • Applications of atmospheric pressure

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