Question

Why a sharp knife cuts vegetables and fruits more effectively than a blunt knife ?

Answer 1

Answer:

The pressure exerted by the sharp knife edge is more than that exerted by the blunt one because the area on which force is exerted with a sharp knife is very small.

Answer 2

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Pressure is inversely proportional to area. Sharp knife has a small area of contact than the blunt knife. Thus, a force will exert more pressure while using a sharp knife than while using a blunt knife.