Question

It is easier to cut with a sharp knife than with a blunt one because
_________​

Answer 1

Answer:

The area of application of load is lesser in sharp knife, so the force gets concentrated in one straight line along the sharp edge, hence cutting takes place. While in case of blunt knife, the force gets distributed in a larger area comparatively, so cutting cannot take place.

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.