Question $1$: The links AB and DE$,$ which are both two force members, are connected to

the crank BCD as shown in figure. The tensile force in the link AB is specified as $850$ N $.$ An

external force of $400$ N and an external couple moment of $1200$N$*$mm are applied at

point B on crank BCD$.$ Additionally, a distributed load starting from zero up to $225$N$//$m is

applied from point C to point D $,$ perpendicular to the axis CD $.$ Knowing that the system is

in equilibrium, determine;

$($a$)$ the force in the link DE$,$

$($b$)$ the reaction at C $.$

If the maximum allowable reaction force at C is $1800$ N $,$

$($c$)$ find the maximum allowable force that can be exerted by link AB $.$

Note that you may neglect the thickness and curvature of the bellcrank BCD$.$