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Physics · MOTION IN A PLANE
हिन्दीTwo forces of equal magnitude \( F \) act on a particle such that the angle between them is \( 120^\circ \). The magnitude of their resultant force is:
Correct answer · Option 3
\( F \)
Explanation
\( R = \sqrt{F^2 + F^2 + 2F^2 \cos 120^\circ} = \sqrt{2F^2 + 2F^2(-0.5)} = \sqrt{F^2} = F \).
