NEET Physics Equilibrium of Forces MCQ Question
Consider a particle in equilibrium under three concurrent forces represented by a triangle in a diagram. If and are two forces forming the sides of the triangle, which statement correctly describes the third force ?

must be equal and opposite to the resultant of and .
must have the same direction as and .
must be perpendicular to both and .
must be twice the magnitude of the resultant of and .
Correct Answer
Detailed Explanation
For equilibrium of three concurrent forces, the vector sum must be zero, meaning is equal and opposite to the resultant of and as described in the context.
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