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2015-10-20T16:00:28+05:30

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Cutting need sharp tools so that they exert large pressure as the area it contacted is small.This is the reason why knives have sharp edges.

pressure and area are inversely proportional to each other.The more area,less will be the pressure and the smaller the area, large will be the pressure. 

Hope this helps..........................

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2015-10-20T16:01:20+05:30

This Is a Certified Answer

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Sharp edges are meant for cutting always because the reason behind this is sharp edges are having lesser contact force so they force will be more so they would cut any thing easily. so they are meant for cutting.


hope so answer is useful
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