Answer
$7577.7 \mathrm{ft}-1 \mathrm{b}$
Work Step by Step
The cart is towed $350=S$ feet.
The force exerted on the wagon is $25=F$ pounds with an angle of $30^{\circ}=\theta$.
The work done is:
\[
F \cdot S \cos \theta=\text { Work done }
\]
Substitute $F . S$ and $\theta$
\[
\begin{array}{l}
25 \cdot 350 \cos 30^{\circ}=\text { Work done } \\
=8750 \cdot 0.866 \\
\qquad=7577.7 \mathrm{ft}-1 \mathrm{b}
\end{array}
\]
The work done is $9031.4$ ft-lb.
