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Homework Help: Electrostatics: Finding force experienced by charge

  1. Mar 27, 2017 #1
    1. Find the magnitude and direction of the force experienced by the charge of 3microcoulombs.

    2. Relevant equations
    After subtending forces of both the particles on the third one, we need to find the aggregate magnitude of the charge experienced by it.

    3. The attempt at a solution
    I was able to find all the sides of the triangle created using using the Pythagoras theorem but am not able to find the angle theta at point P to find the magnitude of the resultant Vector. That should be it right? Thanks.

    Attached Files:

  2. jcsd
  3. Mar 27, 2017 #2


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    Homework Helper
    Gold Member

    Use trigonometry.
  4. Mar 27, 2017 #3
    I don't understand what you're trying to say.
  5. Mar 27, 2017 #4
    Please clarify.
  6. Mar 27, 2017 #5


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    Homework Helper
    Gold Member

    You have a right angled triangle with all the sides known.
    You can find ∠APO using elementary trigonometry.
    Have you studied trigonometry?
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