Question

Why does it happen? Fruits can easily be cut with a sharp knife.

Answer 1

Hint: The force exerted on a surface is measured as pressure. When there is more force, there is more pressure, and when there is less force, there is less pressure. The pressure is also inversely proportional to the area of contact. Various real-life events can help us understand the link between pressure and area of contact.

Complete answer:
Pressure is defined as the force per unit area. As a result, pressure is inversely proportional to surface area. If all else remains constant, pressure is inversely proportional to area.When using a sharp knife, the force produced on the knife acts on a very small area of fruit.

Pressure is inversely related to the area across which force is exerted. As a result, a sharp knife can exert more pressure than a soft knife for the same force. As a result, fruits can be readily cut with a sharp knife.

Additional information: Hammering a sharp pin is easier than hammering a dull pin. This is due to the fact that the area at the tip of a sharp pin is less than the area at the tip of a dull pin. This causes an increase in pressure, allowing you to effortlessly strike the sharp pin.

Note: It is worth noting that pressure is defined as the normal force acting on a certain area. This means that in order to define pressure, the force must act perpendicular to the area of contact. The forces in all of the preceding situations are clearly acting perpendicular to the surface area of contact.