Cutting with a knife relies on applying sufficient pressure to break the material. Pressure = Force / Area. A blunt knife has a larger contact area at the edge than a sharp knife.
With a blunt knife, cutting a vegetable is relatively difficult than with a sharp knife because, for the same force
Asked in KPSC KAS Prelims 2015 · Topic: Mechanics (Newton's Laws of Motion and their applications)
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Answer: B. The pressure applied on the vegetable is lesser in the case of blunt knife
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