Three coplanar equilibrium forces \( P = 40\text{ N} \), \( Q = x\text{ N} \) and \( R = y\text{ N} \) are acting on a body and the body is said to be in equilibrium when the angle included between each other is \( 120^\circ \), then \( x = \)
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When three concurrent coplanar forces maintain static equilibrium and have completely identical angles of \( 120^\circ \) separating them, the force system is perfectly symmetrical. This symmetry means all three force magnitudes must be exactly equal to each other! Thus, \( P = Q = R = 40\text{ N} \) instantly.