Question

If the resultant of two forces is of magnitude P and equal to one of them and perpendicular to it, then the other force is

• A. $P\sqrt{2}$
• B. P
• C. $P\sqrt{3}$
• D. None of these

Answer 1

Answer: (A)

$P\sqrt{2}$

Answer 2

$|\overset{\rightarrow}{AB}| = |Q| = \sqrt{P^{2} + P^{2}} = P\sqrt{2}$.