Answer :
Final answer:
The moment of force F about line OA is equal to 150 N times the perpendicular distance from the line of action of force F to line OA. The moment of force F about line AB is equal to 150 N times the perpendicular distance from the line of action of force F to line AB.
Explanation:
To calculate the moment of force F about line OA, we need to determine the perpendicular distance from the line of action of the force to line OA. Since point B and C lie in the xy plane, the line of action of force F is perpendicular to the xy plane. Therefore, the perpendicular distance from the line of action of force F to line OA is the distance between point B and line OA.
To calculate the moment of force F about line AB, we need to determine the perpendicular distance from the line of action of the force to line AB. Since point B and C lie in the xy plane, the line of action of force F is perpendicular to the xy plane. Therefore, the perpendicular distance from the line of action of force F to line AB is the distance between point C and line AB.
Now, let's calculate the moment of force F about line OA and line AB.
The moment of force F about line OA is given by the formula:
Moment of F about OA = F * d
where F is the magnitude of force F and d is the perpendicular distance from the line of action of force F to line OA.
Similarly, the moment of force F about line AB is given by the formula:
Moment of F about AB = F * d
where F is the magnitude of force F and d is the perpendicular distance from the line of action of force F to line AB.
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