why is it difficult to hold a school bag having a strap made of thin and strong strip?
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the broad straps of school bags reduce the pressure on the shoulder or on the hand. ... In case of thin straps the, the area is small and hence pressure is large. So it is difficult to hold it. For larger straps the area is large thus reducing the pressure can be easily carried.
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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.
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