3 factors that we must always give when expressing a force vector quantity

1. Straight line

2. Arrow
3. Perpendicular

When expressing a force vector quantity, there are three factors that we must always give. These factors describe the magnitude, direction, and point of application of the force.

1. Magnitude: The magnitude of a force is its strength or size. It is typically represented by a numerical value and a unit, such as Newtons (N) or pounds (lbs). To determine the magnitude of a force, you need to consider the given information or measurements related to the force. For example, if the force is applied by a person pulling an object, you might need to know the person's strength or the force that can be exerted by a particular machine.

2. Direction: The direction of a force indicates the line along which the force acts. It can be specified using words, such as up, down, left, right, or by using angles or diagrams. To determine the direction of a force, you need to consider the context in which the force is being applied. For instance, if a force is acting on an object being pushed up an incline, the direction might be specified as "up the incline" or at a particular angle of inclination.

3. Point of Application: The point of application refers to the location on an object where the force is applied. It is essential to specify this factor because a force can vary based on where it is applied. For example, if a force is applied to a lever, the point of application could be at the end of the lever or closer to the fulcrum. The point of application helps determine the torque or rotational effect caused by the force.

By considering these three factors (magnitude, direction, and point of application), you can accurately express a force vector quantity and provide a complete description of the force.