statics

Question: The greatest and least magnitude of the resultant of two forces of constant magnitude are F and G. When the forces act an angle $2\alpha$, the resultant in magnitudes is equal to

1) $\sqrt{{{F}^{2}}{{\cos }^{2}}\alpha +{{G}^{2}}{{\sin }^{2}}\alpha }$

2) $\sqrt{{{F}^{2}}\sin \alpha +{{G}^{2}}{{\cos }^{2}}\alpha }$

3) $\sqrt{{{F}^{2}}+{{G}^{2}}}$

4) $\sqrt{{{F}^{2}}-{{G}^{2}}}$

Solution:

Explanation: No Explanation

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