Physics

Problem

A nail has a circular head of area

2\,\text{mm}^2

. What force must be applied on the head so that the pressure on it is

2\times10^{8}\,\text{Pa}

? a)

40\,\text{N}

4\times10^{3}\,\text{N}

4\times10^{2}\,\text{N}

2\times10^{2}\,\text{N}