Answer :
There have 3 forces acting on the helicopter.
There have 2 forces acting on the load.
Magnitude of net force = 200 N.
Magnitude of acceleration of the system = 0.0833 m/s².
The speed of the system is increasing.
Given parameters:
Mass of the helicopter, M = 2000 kg
Mass of the load; m = 400 kg
Thrust force; F = 26000 N.
Hence, there have 3 forces acting on the helicopter: weight of the helicopter, weight of the load, and thrust.
There have 2 forces acting on the load: weight of the load and thrust.
Total mass of the system = M +m = 2000 kg + 400 kg = 2400 kg.
Magnitude of net force = Thrust - weight of the system
= F - (M + m)g
= 26000 - (2000 + 400) × 10
= 200 N.
Magnitude of acceleration of the system = Magnitude of net force / Total mass of the system
= 200/2400 m/s².
= 0.0833 m/s².
Hence, the speed of the system is increasing.
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