Kilopascals (kpa) to torr, torr to kPa

Thus, to increase the pressure, you need to decrease the area over which the pressure force is distributed. Therefore, the cutting edges of the tools must be sharpened. The cutting edges of knives, saws and other tools are sharpened to reduce the area over which the force applied to them is distributed. A sharp needle will pierce the fabric better than a needle with a blunt end. 

 

In those cases where the pressure is not necessary to increase but to decrease, this can be achieved by increasing the surface area to which the force is applied. For example, truck tires are made wider than passenger car tires to reduce pressure. To prevent a heavy tractor or tank from falling into loose soil, they are not equipped with wheels but with wide and long tracks. To reduce pressure, truck tires are made wider than passenger car tires. Heavy tanks and tractors are not equipped with wheels but with tracks to minimize pressure on the ground.

 

The force exerted by an object on a surface is spread out over the area of contact. When the area is larger, the pressure on the surface is lower. Thus, if the area of contact is smaller, the pressure exerted by the object is higher.