Question

A sikorsky freight helicopter can easily lift a 5000 kg truck. If the acceleration of the truck is 1.5 m/s2 up, what is the net force being applied by the helicopter?

Answer 1

The Newton's second law says

$$F=ma\\ =\rm 5000\; kg\times 1.5\: m/s^2=7500\: N\quad (upward)$$