Does pressure have a magnitude only or magnitude and direction also, and if m is mass of an object and it rests on area of surface  a then the pressure exerted by the object on the surface a is mg/a pascal or mg/a^2 pascal

Asked by Ritu | 19th Oct, 2016, 10:17: PM

Expert Answer:

Pressure is a scalar quantity. Hence, it is described by magnitude only.
 
Pressure is defined as force per unit area.
 
P = F/A
 
Now, force is the weight of the object which is equal to mg. So, pressure is
 
P = mg/a

Answered by Romal Bhansali | 20th Oct, 2016, 06:07: PM

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