How can I calculate the force on a charged particle due to an uncharged infinite conducting plate?
If there is a small object with positive charge placed above a metal plate, the object induces a negative charge on the surface of the plate facing the object. Let's call this surface as $S_1$.
Since the conductor was uncharged initially, and charges always reside on the surface of a conductor, $S_2$ gets a positive charge.
From the picture above, the particle would experience an upward force due to $S_2$ and downward force due to $S_1$. So is the force zero?