Not sure what you are bothered by. Are you questioning the way the flag is shown, i.e. as horizontal?hamza2095 said:
"fnet" stands for net force, which is the overall force acting on an object.
In order for the net force to equal 0 in both the x and y components, the individual forces acting on the object must cancel each other out. This means that the forces in the x direction must be equal and opposite to the forces in the y direction.
One example would be an object at rest on a flat surface. The force of gravity pulling the object down is counteracted by an equal and opposite normal force from the surface, resulting in a net force of 0 in both the x and y components.
If the net force is not 0 in both the x and y components, the object will experience a change in its motion. The object will accelerate in the direction of the net force.
To calculate the net force in both the x and y components, we can use vector addition. This involves breaking down each individual force into its x and y components, then adding them together to find the net force in each direction. Alternatively, we can use the Pythagorean theorem to calculate the magnitude of the net force and trigonometric functions to determine its direction.