Answer
$48\;lb$.
Work Step by Step
The given values are
The given values are
$F_l=2400\;lb$.
$MA=\frac{50}{1}$
Formula for the mechanical advantage is
$\Rightarrow MA=\frac{F_l}{F_s}$
Substitute all the values.
$\Rightarrow \frac{50}{1}=\frac{2400\;lb}{F_s}$
Cross multiply.
$\Rightarrow 50F_s=2400\;lb$
Divide both sides by $50$.
$\Rightarrow F_s=48\;lb$
Hence, the $F_s$ is $48\;lb$.
