Question

OT
1. Why is it difficult to hold a school
bag having a strap made of a thin
and strong string?
​

Answer 1

Answer:

It is difficult to hold a school bag having a thin strap because the pressure on the shoulders is quite large. ... In the case of a thin strap, the contact surface area is very small. Hence, the pressure exerted on the shoulder is very large.

Answer 2

It is difficult to hold a school having strips made of thin and strong string because it has very less contacting area.If area will be less,then pressure will be more.So usually straps of school bags are made broad so it is easy for students to carry the heavy bag.

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