Question

Two forces, each equal to F, at an angle 60°, their resultant is?

• A. $F/2$
• B. F
• C. $\sqrt{3}F$
• D. $\sqrt{5}F$

Answer 1

Answer: (C)

$\sqrt{3}F$

As per question both the force F are equal producing an angle of ${60}^0$.

We know resultant force

$F^{{}^{\prime }}=\sqrt{F^2+F^2+2F\left(F\right)cos\theta }=\sqrt{2F^2+2F^2\left(\frac{1}{2}\right)}=\sqrt{3}F$