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Homework Help: Finding Theta

  1. Dec 12, 2014 #1
    1. The problem statement, all variables and given/known
    Sphere A has a mass=4.2X10^-2 kg and iA tethered to a wall by a thin thread.
    Excess of electrons for A=1.2X10^12
    Excess of electrons for B=3.5X10^12
    Distance between A and B=0.23m
    find the angle between the thread and the wall
    2. Relevant equations

    3. The attempt at a solution

    Attached Files:

  2. jcsd
  3. Dec 12, 2014 #2


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    Staff Emeritus
    Science Advisor

    This might sound picky, but this problem really isn't "Advanced Physics". You need to identify all the forces on sphere A and figure out what angle makes all the forces balance. Draw a force diagram.
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