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If we cut vegitables with sharp knife it is easy but not with a blunt knife |
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Answer» A sharp knife has a very THIN edge to its blade. A sharp knife cuts objects better because due to its very thin edge, the FORCE of our hand falls over very small area of the OBJECT producing a LARGE pressure. And this large pressure cuts the object easily. On the other hand, a blunt knife has a THICKER edge. A blunt knife does not cut an object easily because due to its thicker edge, the force of our hand falls over a larger area of the object and produces lesser pressure. This lesser pressure cuts the object with difficulty. |
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