Question

in which case out of the following is it easier to lift school bag a) school bag with thij and strong string b) school nag with the a strip of wide cloth band explain

Answer 1

In second case it's easy.
When school bag has a strip of wide cloth, the pressure on the shoulders decreases. As we know pressure depends on area,( the larger area, the smaller pressure and the smaller area the larger pressure) wide strips having large area will reduce pressure thus making us feel comfortable.

In first case since there is thin string, which means smaller area, it will increase the pressure on shoulders and hence we will feel uncomfortable.

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Answer 2

Answer:

(b)

Explanation:

In the second case, it is easier to lift the school bags full of books because the school bag has a strip of wide cloth ( which has more area than the thin string ) which decreases the pressure on the shoulders as the area was increased . ( Pressure ∝ 1/Area ) .

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