Question

A sharp knife is more effective than a blunt knife.why?

Answer 1

because sharp knife has lesser the area,larger the pressure for the same force applied .

Answer 2

$\huge\texttt{Answer;}$

Pressure is inversely proportional to area. Sharp knife has a small area of contact than the blunt knife. Thus, a force will exert more pressure while using a sharp knife than while using a blunt knife.