Replace the loading by an equivalent resultant force and couple moment acting at point O$.$ Suppose that w$1=9$ kN$/$m and w$2=5$ kN$/$m

$.($Figure $1)$

Figure

$1$ of $1$

The figure shows a $3-$meter long beam extending to the right from end O attached to a vertical surface. A distributed loading acts downward on the beam, linearly decreasing from w $1$ at the left end of the beam to w $2$ at the point, which is $1\mathrm{.}5$ feet from the left end of the beam, then remaining constant at value w $2$ to the point, which is $0\mathrm{.}75$ feet from the right end of the beam, and then linearly decreasing to zero at the right end of the beam.

Part A

Determine the equivalent resultant force.

Express your answer to three significant figures and include the appropriate units. Enter positive value if the force is upward and negative value if the force is downward.