why do school bags have broad straps?
We know that
pressure = force/area
so, if the area is more pressure exerted will be less and vice versa. This is the reason why shoulder strap in school bags are broad. This helps in reducing the pressure exerted on the shoulders of the person and thus makes it more comfortable to carry around.
hope this helps!!
so ,this is why school bags have larger surface area.As the area of the strap is more hence the pressure exerted by it on our shoulders will be less,by which our school bags weight will not be on us and we will be able to carry it easily without any shoulder pain.
School bags have broader straps so that the pressure exerted on our should will be less. The pressure exerted by the straps on our shoulders will be divided on the surface of the straps. So when the straps are broader, the pressure is divided more, hence the pressure on our shoulders decreases.
This is your answer of your question,