Question

why is it difficult to hold a School Bag having a strap made of a thin and strong string​

Answer 1

The pressure exerted by an object depends inversely upon its area of cross - section . A thin strap has a small area , therefore , it exerts a large pressure on the hand . This makes it difficult to hold .

Answer 2

QUESTION -

why is it difficult to hold a School Bag having a strap made of a thin and strong string?

ANSWER -

It is difficult to hold a school bag having a thin strap because the pressure on the shoulders is quite large. This is because the pressure is inversely proportional to the surface area on which the force acts. The smaller is the surface area; the larger will be the pressure on the surface. In the case of a thin strap, the contact surface area is very small. Hence, the pressure exerted on the shoulder is very large.