why is cutting edge of knife made sharper

Asked by  | 11th Mar, 2008, 10:26: PM

Expert Answer:

A sharp knife cut objects better because due to its very thin edge, the force of our hand falls over a very small area of the object producing a large pressure and this large pressure cuts the object easily. While a blunt knife has a thicker edge. And due to this the force of our hand falls over a large area of the object and produces lesser presure. This lesser pressure cuts the object with difficulty.



Answered by  | 8th Dec, 2017, 02:41: PM

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