Why does a drawing pin must have a sharp point?

Answer 1

I think its because the point has a small surface area which makes it easier to press down on.

p=F/A pressure=force/area (the area is small, you do not need as much pressure)

hope this helps

if u need to double check

Answer 2

The tip of an allpin is sharp so that, when we give thrus , that acts on a very small area, so we have sufficient large pressure, thereby allpin can easily penetrate .