Question

Reema notices​ that it is difficult to cut cloth using a pair of scissors with blunt blades.explain why

Answer 1

This is because of pressure .if you are using a scissor with a blunt blade then the surface area of the blade will increase and this will result in a reduced pressure which won't let us cut the cloth easily.it a just like hammering a blunt nail into the wall instead of a painted one

Answer 2

Hey there!

The area is larger of blunt blades to comparison to sharp edges blades.

We know,

$\boxed{\text{Large Area }\to \text{Less Pressure}}$

So, due to large area, blunt blades have low pressure. 

Hence, it is difficult to cut the cloth using a scissor with blunt edges.

Hope It Helps You!