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Vectors and Its Types

magnitude of ...

Question

magnitude of two forces at same point is F and angle between them is 120 degree so the magnitude of resultant force is

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Solution

Dear Student,

Resultant Force = $\sqrt{F^{2} + F^{2} + 2 F . F \cos θ}$
R = $\sqrt{2 F^{2} + 2 F^{2} \cos 120^{0}}$
R= $F \sqrt{2} (\sqrt{1 - 0.5})$
R= F

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