A chef while cooking cuts his hand with a sharp edged knife, but to his surprise his hand did not cut with a spoon even on the application of a greater force. Why it did cut from a knife for a smaller force.
Open in App
Pressure is defined as force per unit area
Its unit is .
From the formula of pressure, we know that pressure is inversely proportional to the area.
In the case of a spoon, it has a large surface area therefore, the pressure applied is less.
Whereas, in the case of a knife, the area in use is less therefore, the pressure applied by a knife is more.
The pressure of the knife and its sharpness, even with less force, is responsible for the cut on the chef's hand.
A spoon is blunt, and even with greater force, it cannot cut the chef's hand.
Due to the following reasons, the chef cut his hand with the knife and not with a spoon.