Replace the loading on the frame by a single resultant force. Specify where its line of action intersects member CD, measured from end C.
Given:
{ F }_{ 1 } = 500 N\quad a = 3 m
{ F }_{ 2 } = 300 N\quad b = 2 m
{ F }_{ 3 } = 250 N\quad c = 1 m
M = 400 N.m\quad d = 2 m
\theta = 60 deg\quad e = 3 m
\quad \quad \quad\quad\quad f = 3
\quad \quad \quad\quad\quad g = 4