Question

cutting tool have sharp edges because​

Answer 1

cutting tools have sharp edges so that it can easily cut the vegetable or fruits. This is so because when the area is decreased the force applied is increased and when the area is increased the force applied is decreased.

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Answer 2

The cutting edges of tools like blades, knives etc., are provided with sharp edges to cut the things easily as the sharp edges has small area on which the force is applied, hence more pressure is applied.