Question

The cutting edge of cutting instruments is sharpened because by _______ the area of cross-

section, the _______ increases.

Answer 1

having,pressure





.hope it's right

Answer 2

Here is your answer

Mate!!

Answer:

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.

Explanation:

As we know,

                                  Pressure = Force/Area

From the above mathematical expression we can say that the pressure applied on a body is inversely proportional to the area on which the force is applied, the pressure exerted on a small surface area is more than the pressure exerted on the large surface area.

So we can conclude that equal force can exert higher pressure on a small area. This is why the cutting edges of tools like blades, knives etc., are provided with sharp edges to cut the things easily. The high pressure at the end of these sharp surfaces can easily pierce through wooden, plastic etc.,  surfaces.

(a)Having.

(b) pressure increases.