Four forces are acting at a point P in equilibrium as shown in figure. The ratio of force F1 to F2 is 1:x where x= ______.
Answer: 3
Solution
For equilibrium, resolve forces along x and y directions. From the geometry (angle θ=45∘), taking components: F1=2−21=22−1=21 and F2=2+21=22+1=23. Therefore, F2F1=3/21/2=31, giving x=3.