Question

. Explain briefly.
1. Knives and piercing tools have a very sharp edge.​

Answer 1

Answer:

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

Answer:

this is the explanation

Explanation:

The cutting edges of the tools like knives, scissors and blades have been provided by the sharp edges to allow the cutting of things easily with the sharp edges. ... Thus the cutting instruments have sharp edges so that more pressure can be applied and cut off the material with less force.