Question

Question #9fe7c

Answer 1

See Below.

Explanation:

A Sharp Knife is a knife you can use to cut through objects
easily, that means you have to apply less force to cut more.

A Blunt Knife is a knife which cannot be used efficiently to cut through the object easily, that means we have to apply more force to cut less.

As we know, the pressure the knife is applying to the object is responsible to cut the object, it means a Sharp Knife gives off more pressure.

We also know, `P = F/A rArr F prop 1/A` when `P` is constant.

So, In order to get more pressure using same force, the area of the surface coming in contact with the object should be less and that is what a Sharp Knife has.

Hope this helps.