Moderate# Charges on a Triangle

APPHEM-BGBLT3

Two identical charges , $\mathrm{q_1}$ are placed at the vertices of a right triangle as shown above.

If a third charge $\mathrm{q_2}$ is placed at the vertex of angle formed by the two legs, what is the magnitude of the net electrostatic force acting on $\mathrm{q_2}$?