Members HK$,$ EF$,$ and CD are welded together as shown and each have a mass of $4\mathrm{.}8$ kg$.$ Given the geometric parameters below and that the angular velocity and angular acceleration of member BC are $1\mathrm{.}4$ rad$/$s and $8\mathrm{.}6$ rad$/$s$2$ respectively, determine the internal moment at point E in N$-$m$.$

L$=7\mathrm{.}6$ m$,$ y $=2\mathrm{.}0$ m$,$ $=30$