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SS2: PHYSICS - 1ST TERM

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  1. Scalars & Vectors | Week 1
    4 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
    2 Topics
  8. Speed, Velocity & Acceleration & Energy of Simple Harmonic Motion | Week 8
    3 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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Types of Machines

Lever

A lever is a rigid bar pivotal on a support known as fulcrum or pivot. A force F is applied at one end of the bar to overcome load L at the other end.

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The distance between the fulcrum and the effort is called effort arm while the distance between the load and fulcrum is called load arm. 

Types of Lever

First Class Lever:  For this type of machines, the fulcrum is between the load and the effort applied e.g. plier, scissors, claw harmers, etc.

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Second Class Lever:  The load is between effort and the fulcrum.

image36

Example is a wheelbarrow, opener, etc.

Third Class Lever: This is when the effort applied is between the load and the fulcrum e.g. nutcracker, forceps, sugar tong.

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