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SS1: PHYSICS – 3RD TERM

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  1. Production of Electric Current | Week 1
    6 Topics
    |
    1 Quiz
  2. Electric Current | Week 2
    5 Topics
    |
    1 Quiz
  3. Electrical Resistance of a Conductor | Week 3
    5 Topics
    |
    1 Quiz
  4. Particulate Nature of Matter | Week 4
    5 Topics
    |
    1 Quiz
  5. Crystalline and Non-crystalline Substances | Week 5
    3 Topics
    |
    1 Quiz
  6. Elastic Properties of Solids | Week 6 & 7
    4 Topics
    |
    1 Quiz
  7. Fluids at Rest & in Motion | Week 8 & 9
    6 Topics
    |
    1 Quiz
  8. Solar Collector
    3 Topics
    |
    1 Quiz
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Topic Content:

  • Speed of Object Falling Through Viscous Fluid
  • Meaning of Terminal Velocity

Speed of Object Falling Through Viscous Fluid:

When an object, such as a stone, falls through a liquid, three forces act on it.

1. U – Upthrust of the liquid on the stone acting upwards.
2. W – Weight of the stone acting downward.
3. V – Viscous force acting upwards and opposing its motion.

Motion of sphere in a viscous liquid 2
Motion of sphere in a viscous liquid
speed of object in liquid 2
Terminal velocity

Therefore, the equation can be written as;

 

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