Question

What will you prefrer : a school bag with a wide or a thin a strap ? why ? ​

Answer 1

Explanation:

Bags should be provided with broad straps because it decreases the pressure by increasing surface area which makes it easier to carry them. On the other hand, thin straps decrease surface area which results in more pressure and it becomes hard for us to carry them.

Answer 2

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, then surface area in contact with the shoulders would decrease which will lead to increase in pressure on shoulders