Question

Two forces, each equal to P upon 2 act at
right angles. Their effect may be neutralized
by a third force acting along their bisector in
the opposite direction with a magnitude of​

Answer 1

Their effect may be neutralized by a third force acting along their bisector in the opposite direction. What is the magnitude of that third forces. The third force, should be opposite to the resultant and of same magnitude. Hence, answer is F/√2.