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Two small beads having positive charges 39 and 9 are fixed
at the opposite ends of a horizontal, insulating rod, extending
from the origin to the point x = d. As shown in figure, a
third small charged bead is free to slide on the rod. At what
position is the third bead in equilibrium? Can it be in stable
equilibrium?
+39
@
|
Fig.
·ď·
+9

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