Question

Explain why, school bags are provided with wide straps to carry them.

Answer 1

As we know that pressure is inversely proportional to area, so an increase in the area means a decrease in pressure. School bags are provided with broad straps to increase the surface area in contact with the shoulders and reduce pressure on the shoulders. If thin straps would be used, the surface area in contact with the shoulders would decrease which will lead to an increase in pressure on shoulders.