Final answer:
The calculation of the moment about point A requires additional details such as the acting forces and their distances from the pivot point, which are not provided in the question. The moment is calculated as the product of force and distance in Physics.
Step-by-step explanation:
The question provided involves calculating the moment about a point, which is a concept from Physics, particularly the area known as mechanics.
The moment (also known as torque) is given by the product of the force applied and the perpendicular distance from the pivot point to the line of action of the force.
The problem statement does not provide enough details to calculate the moment directly, such as the forces involved or their distances from point A.
A detailed figure, the location of point A, and an understanding of the forces and distances involved in the specific scenario are necessary to provide an accurate calculation of the moment.