why is it difficult to hold a school bag having a strap made of a thin and strong string?
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Answer:It is difficult to hold a school bag having a strap made of a thin and strong string because the area under the strap is small. Hence large pressure is exerted by the strap on the fingers or shoulders. Due to the large pressure, the strap tends to cut the skin and hence pain is caused.
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Answer:
Because the thin strip exerts more pressure on our shoulders where as a flat strip having more area exerts less pressure
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