If a number of concurrent coplanar forces are acting on a point body, then give the condition for its static equilibrium.

Explanation

The algebraic sum of X components and Y components of a system of forces should vanish independently.
`sigmaX=0,sigmaY=0` Where `sigmaX=A_1costheta_1+A_2costheta_2+A_3costheta_3`+………………..`+A_ncostheta_n=0` and `sigmaY=A_1sintheta_1+A_2sintheta_2+A_3sintheta_3`+.................`A_nsintheta_n=0`