Question

(a) Define atmospheric pressure. (b) State some applications: - (i) Where we reduce the pressure by increasing the surface area over which the force is executed? (ii) Where we increase the pressure by reducing surface area over which the force is executed.

Answer 1

The thrust exerted by the atmosphere on per unit area of the surface of the earth is called atmospheric pressure. b1) the foundations of tall buildings are made thicker so that the pressure exerted by the buliding upon the ground decreases b2)the edges of cutting tools are made sharper such that the pressure exerted by them increases