Above: Round and oval structures are the most resistant to pressure and forces. Here students (both light and heavy) stood on a tray of eggs to prove that point. The weight of each of the students is spread out over the surfaces of contact between the soles of their feet and the oval surfaces of the eggs.
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Pressure = Force ÷ Area of contact
The S I units for pressure is Pa (pascals or N m-2 )
as the SI units for force is N and that of area is sq. metre or m-2
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