Force Diagram of Electrostatic Forces

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Soaring Crane
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Homework Statement



Two uniformly charged spheres are firmly fastened to and electrically insulated from frictionless pucks on an air table. The charge on sphere 2 is three times that on sphere 1. Which force diagram correctly shows the magnitude and direction of the electrostatic forces?

a.Figure 1
b.Figure 2
c.Figure 3
d.Figure 4
e.Figure 5
f.Figure 6

Each choice is illustrated in the attachment. Please tell me if it is accessible.

Homework Equations



Possibly F = (k*q_1*q_2)/(r^2) ?

The Attempt at a Solution



Is the correct choice e. Figure 5?? Each sphere would have the same magnitude of force if Coulomb's Law is followed but each sphere's electric force would point in the opposite direction in adherence to Newton's Third Law??

Thanks.
 
Attachments
  • Six numbered force diagrams showing two charged spheres on pucks, labelled 1 and 2, with arrows for electrostatic force; sphere 2 carries more plus signs than sphere 1 in each.
    Tip22_fig1[1].gif
    4.3 KB · Views: 1,113
You're correct again. I don't know why you bother posting here :biggrin::wink: