Question

Why it is difficult to cut vegetable with a blunt knife?

Answer 1

Since , P = F/A ,

Since , P is inversely proportional to A , since , a blunt knife accquires less pressure due to large area on vegetable so thats why it is difficult A increases so P decreases ,

Answer 2

We know that ,

⇒$P= \frac{F}{A}$

 Pressure is inversely proportional to force and area . So ,when pressure  increases the Force and Area Decreases. 

Similarly , as in the  case of blunt knife the Force and Area is increased , so the pressure decreases. That's why it is difficult to cut the vegetables with blunt knife with less amount of pressure.