Question

Why is the tip of an allpin made sharp?

Answer 1

We knew that pressure acting on a surface is indirectly proportional to it's surface area.So the tip of the allpin is made sharp in order to apply thrust or pressure at a particular point without getting deviated such that it will finally penetrates easily into the surface.

Answer 2

it is sharp because the pressure applied in it does not get divided and the more pressure will be there in an point