1.

why is it difficult to hold a schoolbag having a strap made of a thinand strong string?

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Ans :- It isdifficult to hold a school bag havinga strap made of a thin and strong string because the area under the strap is small. Due to the large pressure, the strap tends to cut the skin and hence pain is caused.

this is because, pressure is inversely proportional to areatherefore ,thin and stronger string will exert more pressure and hence it is difficult to hold it.



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