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dowz0r
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Q: In the rectangle in the drawing, a charge is to be placed at the empty corner to make the net force on the charge at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty corner?
The picture shows a normal rectangle. The upper left and lower left corners have a sphere with a charge of +3μC, and the lower right corner has a sphere with a charge of +3μC. The upper right corner is the blank one and point A is located at the lower left sphere. The upper horizontal side/line shows a length of 4d, and the right vertical side/line shows d. I know you have to use f = k(q1)(q2) / r^2 , but I don't know where to go from there.
Help is greatly appreciated!
The picture shows a normal rectangle. The upper left and lower left corners have a sphere with a charge of +3μC, and the lower right corner has a sphere with a charge of +3μC. The upper right corner is the blank one and point A is located at the lower left sphere. The upper horizontal side/line shows a length of 4d, and the right vertical side/line shows d. I know you have to use f = k(q1)(q2) / r^2 , but I don't know where to go from there.
Help is greatly appreciated!
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