High pressure is useful for cutting, sewing and hammering nails because
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a nail has a pointed edge so that it exerts more thrust or pressure
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High pressure is useful for cutting, sewing and hammering nails because ,
a nail has a pointed edge so that it exerts more thrust or pressure.
the tip with the smallest area will produce a higher pressure when a small force is applied.
The pressure is defined as the force per unit area. i.e P=F/A
So the pressure depends on the force F and area A of contact.
As sharp tipped nail has very small area of contact than a blunt nail (not sharp).
so it will give more pressure when a small force is applied.
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