- #1
NullSpace0
- 25
- 0
Homework Statement
What is the force on an infinite conducting plane due to two point charges: a +2q located at a height 4h above the plane and a -q charge located at a height 2h above the plane, directly beneath the other point charge.
Homework Equations
The Attempt at a Solution
I know that due to Newton's 3rd Law, I can just calculate the force on a single charge (due to an image charge symmetrically below the plane) and the negative of this force is the force on the plane. Does this method extend to 2 charges?
Then I would think that I place a -2q charge at -4h, and a +q charge at -2h, and then calculate the two forces on the real charges due to the 3 other charges present... then the opposite of that force is the force ON the plane?
Can you add the forces like that?