Direction and magnitude of the net electrostatic force

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Homework Help Overview

The discussion revolves around determining the direction and magnitude of the net electrostatic force on a point charge, specifically charge q2, in a given configuration involving multiple charges. The subject area is electrostatics, focusing on the interactions between charged particles.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the components of forces acting on q2 and the need for vector addition to find the net force. Questions arise about how to proceed after calculating individual force components and the importance of choosing a reference frame.

Discussion Status

Some participants have made progress in calculating force components but express uncertainty about the next steps. Guidance has been offered regarding the use of Coulomb's Law and the principle of superposition, indicating a productive direction in the discussion.

Contextual Notes

Participants are working within the constraints of a homework assignment, which may limit the information they can use or the methods they can apply. The specific values for charge and distance are provided, but the diagram referenced is not included in the discussion.

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Find the direction and magnitude of the net electrostatic force exerted on the point charge q2 in Figure 19-31. Let q = +1.8 µC and d = 41 cm.
Direction ° (from the x-axis, which points to the right)
Magnitude N
*image of diagram*
http://www.webassign.net/walker/19-31.gif
 
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i have found the components of all the charges, but don't know where to go after i get them, any help?
 
Pick one charge, and figure the magnitude and direction for the attraction or repulsion of the other three charges.

The electrostatic force (vector) is along the line between each charge.

The net force (vector) on one charge is the sum of the forces (vector) due to the three other charges.

Remember - this is vector addition.

In the diagram, q2 (-) is attracted to q1 (+), but repelled by q3 (-) and q4 (-), along the lines between each charge.
 
You need to choose a frame of reference, use Coulomb's Law and the principle of superposition (the total force exerted on q2 is sum of the forces exerted by each separate particle)...
 
Last edited:

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