Concept explainers
Why is it important that many nails are in the boards of Figure 6.7?
To explain: The reason for so many nails in the board.
Explanation of Solution
Introduction:
Pressure is force per unit area. Pressure is inversely proportional to area.
Consider the figure shown below.
For constant force, pressure is decreased by increasing the surface area in contact.
On board, many nails are there so the pressure is reduced or decreased. Since the pressure is reduced, so the force applied on nail will not be enough to rupture the skin.
Thus, it is important to have many nails on the board.
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