Question

How is pressure related to the sharpness of a knife and its ability to cut?

a) Higher pressure improves cutting.
b) Lower pressure improves cutting.
c) Pressure has no effect on cutting.
d) Pressure only affects blunt objects

Answer 1

Pressure relates to the sharpness of a knife in that a sharper knife has a smaller surface area and thus exerts higher pressure with the same force, improving its cutting efficiency.

Step-by-step explanation:

The pressure of a knife is determined by the force exerted over a specific area. A sharp knife has a much smaller cutting edge, which means that the same applying force results in a higher pressure due to the reduced surface area. Therefore, a sharper knife, when operated with the same amount of force as a dull knife, will exert higher pressure and improves cutting efficiency, answering a) Higher pressure improves cutting.