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SS2: PHYSICS - 1ST TERM

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  1. Scalars & Vectors | Week 1
    5 Topics
    |
    1 Quiz
  2. Equations of Motion | Week 2
    3 Topics
    |
    1 Quiz
  3. Projectile | Week 3
    5 Topics
  4. Equilibrium of Forces I | Week 4
    4 Topics
  5. Equilibrium of Forces II | Week 5
    4 Topics
  6. Stability of a Body | Week 6
    4 Topics
    |
    1 Quiz
  7. Simple Harmonic Motion (SHM) | Week 7
    4 Topics
  8. Speed, Velocity & Acceleration & Energy of Simple Harmonic Motion | Week 8
    5 Topics
    |
    1 Quiz
  9. Linear Momentum | Week 9
    6 Topics
    |
    1 Quiz
  10. Mechanical Energy & Machines | Week 10
    2 Topics
    |
    1 Quiz



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For a body to be in equilibrium, the sum of forces in one direction must be equal to the sum of the forces in the opposite direction.

force board experiment
Force board experiment – Resultant and equilibrant forces

From the force board experiment, the resultant R of two forces A and B acting at point O is found using the parallelogram method. It is found to be equal in magnitude but opposite in direction to the third force. This third force which is equal in magnitude but opposite in the direction of the resultant force is called equilibrant force, therefore,

A resultant force is that single force that acts alone and has the same effect in magnitude and direction as two or more forces acting together.

An equilibrant force is a single force which will balance all other forces taken together. It is equal in magnitude but opposite in direction to the resultant force.

force load exp e1603746458311

If F1, F2, and F3 are in equilibrium, F1 is the equilibrant of F2 and F3, F3 is the equilibrant of F1 and F2, F2 is the equilibrant of F1 and F3.

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