Answer
Net force = 93 N
Work Step by Step
a = $\frac{F_{net}}{m}$
= $\frac{3.7 \times10^{4}}{3.1 \times10^{4}}$
$\approx$ 1.1935 m/$s^{2}$
$F_{net}$ of pilot = ma
$\approx$ 78 $\times$ 1.1935
$\approx$ 93 N
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