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EQUILIBRIUM OF FORCES

CONTENT

  1. Definition of Resultant Force
  2. Equilibrant Force
  3. Types of Equilibrium
  4. Moment of a Force
  5. The Principle of Moment
  6. Taking Moment About the Pivot
  7. Conditions for Equilibrium for a System of Parallel Forces
  8. Couple
  9. Applications of Couple
  10. Centre of Gravity
  11. Types of Equilibrium/Stability
  12. Centre of Mass

 

Definition of Resultant Force

This can be defined as a single force which can produce the same effect as the combined force on a system.  The addition of two or more forces produces the resultant force. The resultant of any system of force can be obtained through any of the processes described earlier.

Equilibrant Force

This is that force which when added to a system of vectors will make the resultant of the system zero. Equilibrant has the same magnitude as the resultant force but it always acts in a direction opposite to that of the resultant.

resultant (R) = -equilibrant (E)

For a system in equilibrium, the resultant force is ZERO.

Lesson tags: Physics Lesson Notes, Physics Objective Questions, SS2 Physics, SS2 Physics Evaluation Questions, SS2 Physics Evaluation Questions First Term, SS2 Physics First Term, SS2 Physics Objective Questions, SS2 Physics Objective Questions First Term
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