Final answer:
The moment of an item installed in an aircraft refers to its angular momentum, which can be calculated using the equation: Angular Momentum = Moment of Inertia x Angular Velocity. The moment of inertia depends on the mass and shape of the item, while the angular velocity is the rate at which the item rotates. If the airplane is flying along a constant altitude, its angular momentum will not change.
Step-by-step explanation:
The moment of an item installed in an aircraft refers to its angular momentum. The magnitude of the airplane's angular momentum relative to a ground observer directly below the plane can be calculated using the equation: Angular Momentum = Moment of Inertia x Angular Velocity. The moment of inertia depends on the mass and shape of the item, while the angular velocity is the rate at which the item rotates. If the airplane is flying along a constant altitude, its angular momentum will not change.