Question

It is easier to pierce a cardboard with a pin if the pin has sharp tips. why?

Answer 1

Answer:

For a given amount of force, the smaller the area of contact the greater the pressure exerted. This explains why it would be easier for a sharp pin to penetrate a piece of cardboard than a blunt one when the same force is used.

Explanation:

Answer 2

Answer:

less area exerts more pressure so we can pierce a card board with a pin if the pin has sharp tips