Answer:

Step-by-step explanation:
The upward acceleration of an object can be calculated using the formula:

where:
a is the acceleration of the object (in meters per second squared)
F is the force acting on the object (in newtons)
m is the mass of the object (in kilograms)
So in this case, we have:

This is the upward acceleration of the helicopter when a force of 11000 N is acting on it.