Moment and Force Couple System

Q. Consider the forces of magnitude F acting on the sides of the regular hexagon having side length a. At point B, the wqivalent force and couple are, respectiely.

1. F ($\leftarrow$) and $3\sqrt{3}Fa$ (clockwise)
2. F ($\to$) and zero
3. F ($\leftarrow$) and $\sqrt{3}Fa$ (counter clockwise)
4. F ($\to$) and $3\sqrt{3}Fa$ (counter clockwise)

Q. A plane is held by a chain AB through hinge joints. The plate is pulled with a force T as shown in figure. The tension in the chain is given by

1. $\left(\sqrt{3}/2\right)T$
2. $\left(\sqrt{2}/3\right)T$
3. $T/2$
4. $3\sqrt{2}T$