Question

The acceleration of gravity is given as a function of elevation above sea level by the relation g=9.81-3.32x10-6 h, with h measured in meters. What is the weight

of an airplane at 10km elevation when its weight at sea level is 40 kN?

Answer 1

Weight = mg

$W=40,000 \times 9.81\times10^{-6} \times 10000=3924N$