Answer
$99000\;lb$.
Work Step by Step
The given values are
The given values are
Mechanical advantage $MA=36:1$.
Force applied to the small piston $F_s=2750\;lb$.
Formula for the mechanical advantage is
$\Rightarrow MA=\frac{F_l}{F_s}$
Substitute all the values.
$\Rightarrow \frac{36}{1}=\frac{F_l}{2750\;lb}$
Cross multiply.
$\Rightarrow 99000\;lb=F_l$
Hence, the $F_l$ is $99000\;lb$.