There are two school bags A & B. Bag A is provided with a broader strap, while bag B is provided with a thinner strap. For the same load, a student likes bag A as he is comfortable with it; but with bag B, he develops a pain in his shoulders. This is because:
None of these
Since pressure is the thrust (normal force) per unit area, in bag A the pressure developed would be less than B for the same load as the straps of A is broader.