Question

The force acting on a unit area of a surface is called
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Answer 1

Answer:

The force acting on a unit area of a surface is called pressure.

Answer 2

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The force acting on a unit area of a surface is called pressure.

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$\implies$The amount of force exerted on a surface, per unit area, is called pressure (P). It can also be defined as the ratio of the force to the area over which the force is acting.

$\implies$The unit of pressure is the pascal (Pa), equivalent to one newton per metre sqaure.

For example, it is easier to hammer a sharp pin on a wooden surface than to hammer a blunt pin. The smaller the area, the larger will be the pressure on a surface for the same force. The area of the pointed end of the nail is much smaller than that of its head. The same force, therefore, produces a pressure sufficient to push the pointed end of the nail into the wooden plank.

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