Wednesday, June 3, 2015

The pressure acting on a surface is 10 Pa. What does this mean?

The pressure acting on a surface is 10Pa means  a force of  one 10 Newton  exerts on every square meter of area . Also if the a force of F is exerted on an area A , then the  pressure P on the area is given by:


P = F/A Pascals,


Thus Pascal is the measure of the unit of pressure and its dimension is N/m^2 or as per dimensional analysis  pascal has the indices if mass, length and time expressed like: MLT^-2/L^2  or [ M^1] [L^-1][T^-2].


Nomally pressure per unit area or the unit of pascals are used of mentioning air pressure, liquid pressure , tensile stress , shearing sress etc.

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