Question

Why does a sharp knife cut objects more effectively than a blunt knife?

Answer 1

A sharp knife cuts objects better because due to its very thin edge, the force of our hand falls over a sharp small area of the object producing a large pressure. And this large pressure cuts the object easily. A blunt knife has a thicker edge and does not cut the object easily.

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Answer 2

Answer:

It is because when we cut something with a blunt knife the area between the object is more and even a good effort may go futile.