Replace the loading system acting on the post by an equivalent resultant force and couple moment at point O.
Given:
{ F }_{ 1 } = 30 Ib\quad a = 1 ft\quad d = 3
{ F }_{ 2 } = 40 Ib\quad b = 3 ft\quad e = 4
{ F }_{ 3 } = 60 Ib\quad c = 2 ft
Replace the loading system acting on the post by an equivalent resultant force and couple moment at point O.
Given:
{ F }_{ 1 } = 30 Ib\quad a = 1 ft\quad d = 3
{ F }_{ 2 } = 40 Ib\quad b = 3 ft\quad e = 4
{ F }_{ 3 } = 60 Ib\quad c = 2 ft