Why do knives and blades have sharp edges ?
MSCERT Class 8th General Science Ch3 Atmospheric Pressure
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We know that Pressure= Force/ Area
As area of contact decreases the pressure increases and vice versa.
The knives and blade have sharp edge because :
---> The area of sharp edge is less .
--->Pressure acting will be more.
--> so with less effort a person can cut the vegetables or fruits very easily.
As area of contact decreases the pressure increases and vice versa.
The knives and blade have sharp edge because :
---> The area of sharp edge is less .
--->Pressure acting will be more.
--> so with less effort a person can cut the vegetables or fruits very easily.
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