﻿ | Force And Pressure Class 8
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Answer

Cutting instruments like  blades and axes are sharpened to decrease the area of cross-section that is in contact with the object being cut.

Using the formula,

Pressure = Force /Area, we can say that with decrease in area the pressure exerted by them on the surface increases. Thus, they can easily penetrate the surface that they are meant to cut without applying much force.

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Cutting instruments like  blades and axes are sharpened to decrease the area of cross-section that is in contact with the object being cut.

Using the formula,

Pressure = Force /Area, we can say that with decrease in area the pressure exerted by them on the surface increases. Thus, they can easily penetrate the surface that they are meant to cut without applying much force.

Answer

Cutting instruments like  blades and axes are sharpened to decrease the area of cross-section that is in contact with the object being cut.

Using the formula,

Pressure = Force /Area, we can say that with decrease in area the pressure exerted by them on the surface increases. Thus, they can easily penetrate the surface that they are meant to cut without applying much force.

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