Refer to figure.
Moment is the turning force created around a datum by the mass over a distance or lever arm:

• Moment = Mass x Arm.

The lateral moment is equal to the mass multiplied by its corresponding lateral arm.

Moments and arms left of the datum are by convention negative and those right of the datum are positive. For this question, advise the sign ("+" or "-") given in the figure for each arm.

The total lateral moment of the helicopter is the sum of the following moments:

1. BEM (3 900 kg) x (-0.8 in) = -3 120 in kg

2. Fuel (550 kg) x (+0.17 in) = +93.5 in kg

3. Oil (60 kg) x (+2.2 in) = +132 in kg

4. Crew (150 kg) x (-14 in) = -2 100 in kg

5. Row 1 Pax (140 kg) x (+8.7 in) = +1 218 in kg

6. Row 3 Pax (75 kg) x (+12.8 in) = +960 in kg

7. Front Hold (40 kg) x (-2.78 in) = -111.2 in kg

8. Rear Hold (325 kg) x (+6.25 in) = +2 031.25 in kg

9. Total lateral moment = -896.45 in kg