Question

Why do tools meant for cutting always have sharp edges ?​

Answer 1

Explanation:

The smaller the area, larger the pressure on a surface for the same force. This is why tools meant for cutting and piercing always have sharp edges. By increasing the area we can also reduce the pressure on a surface for the same applied force.

Answer 2

Cutting means the insertion of a thin object all along in a body so that the body gets divided into parts .Tools with thin or sharp edges allows us to concentrate or focus our applied force on less area through which the cutting of the object starts or we can say that the exerted pressure is more in case of thin tools.

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