t I. Shorter problems focused on the fundamentals

a$.$ What is the moment caused by the couple moment shown, if the force, $F=1161bf,a=3\mathrm{.}7ft.,$ and $b=7\mathrm{.}2ft.?$

b$.$ What force $($blue below$)$ would produce an equivalent couple moment as above? The dimensions a and $b$ are the same as above.