(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Four electrical charges are located at the corners of a rectangle. Like charges, you will recall, repel each other while opposite charges attract. Charge B exerts a repulsive force (directly away from B) on charge A of 3.3 N. Charge C exerts an attractive force (directly toward C) on charge A of 6.6 N. Finally, charge D exerts an attractive force of 2.2 N on charge A.

The Dimensions of the rectangle are 141 cm x 100 cm

A B

C D (That's how the rectangle is laid out)

Assuming that forces are vectors, what is the magnitude of the net force \vec{F}_{\rm net} exerted on charge A?

What is the direction of the net force \vec{F}_{\rm net} exerted on charge A?

2. Relevant equations

I would think it would be Ax= Acostheta Av=Asintheta

3. The attempt at a solution

I've been working on this one for about 4 hours ( I know =[).

Now, I thought we were supposed to break up the components into an X and Y component, but I'm not sure where the negative signs go (if any) and which components don't need to be broken down.

I tried calculating the angles and bisecting the rectangle in two then using the B charge and C charge as they were, and finding the components for the D charge. Im still not sure if this is the right way to go about it. Any help?

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# Homework Help: Vectors and Charges

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