Question

If you stepped on the point of a sharp nail with tpur bare foot it would be extremely painful.expalin in terms of pressre why this is so.

Answer 1

As a sharp nail has a pointed edge, it has a small surface area. Smaller the surface area, greater the pressure because pressure = force/area. So, with a smaller surface area the pressure applied by the pointed tip edge of the nail is increased and hence, turns out to be painful when stepped on.

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