why is it difficult to hold a School Bag having a strap made of a thin and strong string
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because a thin strap exerts a high force on our shoulders causing pain.
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It is so because as the straps are thin it applies more pressure on the shoulders but if the straps will be broad it will apply less pressure.
that is because , more surface area less pressure, less surface area more pressure.
that is because , more surface area less pressure, less surface area more pressure.
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