Final answer:
To find the magnitude and direction of the resultant force and moment at point A, we need to use vector addition and trigonometry. For the moment at point A, we calculate the moment by multiplying the force by the perpendicular distance.
Step-by-step explanation:
To find the magnitude and direction of the resultant force and moment at point A, we need to use vector addition. First, we find the horizontal and vertical components of the individual forces. Then, we add the components to find the resultant force. Finally, we calculate the magnitude and direction of the resultant force using the Pythagorean theorem and trigonometry.
For the moment at point A, we need to determine the force and its perpendicular distance from point A. To find the moment, we multiply the force by the perpendicular distance. The direction of the moment is determined by the right-hand rule.