Question

hanging school bags have wide straps why

Answer 1

to reduce the pressure of bag as if the strap is wider then the area become large and we know that if the area is large then the pressure reduces

Answer 2

Hey!!!!

This fact uses the concept of Area and Pressure

We know Pressure Applied is inversely proportional to the area of contact.

Thus if the straps of the bag are narrow the student will suffer because pressure exerted will be more.

Thus the straps are wide to exert less pressure on student's shoulders.

Hope this helps