- #1
ScottL
- 2
- 0
Homework Statement
In the figure 21-29, particles 2 and 4, of charge -e, are fixed in place on a y axis, at y2 = -7.20 cm and y4 = 16.6 cm. Particles 1 and 3, of charge -e, can be moved along the x axis. Particle 5, of charge +e, is fixed at the origin. Initially particle 1 is at x1 = -9.84 cm and particle 3 is at x3 = 9.84 cm. (a) To what x value must particle 1 be moved to rotate the direction of the net electric force net on particle 5 by 30.1o counterclockwise? (b) With particle 1 fixed at its new position, to what x value must you move particle 3 to rotate net back to its original position?
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......4......
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-------1------5-------3------
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......2......
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I tried to represent the picture that was provided as accurate as possible.
here is the actual picture that I was provided with.
http://edugen.wiley.com/edugen/courses/crs1650/art/qb/qu/c21/fig21_38.gif
Homework Equations
Ok I know that I am supposed to use
FE = k(Qe*qp)/r2)
I can get the force that each one has on point 5 just by using the equation above but then I am stuck.
The Attempt at a Solution
I have not attempted the solution yet because I don't know where to start.