Statics

If three forces P, Q, R acting on a particle keep it in equilibrium then, P + Q + R =

(a)  

The resultant of two equal forces will bisect the angle between them.

The greatest resultant of two forces of magnitudes P and Q has magnitude

If the resultant force R is least then, the angle between the two forces P and Q will be

The weight of the body acts

The resultant of two unlike parallel forces P and Q is

If the  forces are equal at an angle 

If the forces are at right angles, then the parallelogram made by the forces become

By Lami's theorem, P/ sin( Q , R) = Q / sin( R , P) =

The direction of the resultant of the forces P and Q is given by 

 $\tan\ \phi$ =