what is pressure? or Difine pressure ---
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force applied on a surface per unit area
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Pressure is defined to be the amount of force exerted per area.
Consider the following example,
If you hammer a spherical iron ball to the wall, nothing would probably happen. You'll get tired after some time, but that iron ball will not get in to the wall. Whereas, If you hammer a Drawing pin to the wall it will get into the Wall.
This shows that sometimes just knowing the magnitude of the force isn't enough, you also have to know how that force is distributed on the surface of impact. For the nail, all the force between the wall and the nail was concentrated into the very small area on the sharp tip of the nail. However, for the Spherical iron ball the area touching the wall was much larger, and therefore the force was much less concentrated.
Therefore , P = F/A
where,
P = Pressure
F = Normal Pressure/Thrust
A = Area
This definition also means that the units of pressure are newtons per square meter, N/m^2
which are also called Pascal or abbreviated Pa.
Hope it helped
#follow me
#GeniuSk101
Consider the following example,
If you hammer a spherical iron ball to the wall, nothing would probably happen. You'll get tired after some time, but that iron ball will not get in to the wall. Whereas, If you hammer a Drawing pin to the wall it will get into the Wall.
This shows that sometimes just knowing the magnitude of the force isn't enough, you also have to know how that force is distributed on the surface of impact. For the nail, all the force between the wall and the nail was concentrated into the very small area on the sharp tip of the nail. However, for the Spherical iron ball the area touching the wall was much larger, and therefore the force was much less concentrated.
Therefore , P = F/A
where,
P = Pressure
F = Normal Pressure/Thrust
A = Area
This definition also means that the units of pressure are newtons per square meter, N/m^2
which are also called Pascal or abbreviated Pa.
Hope it helped
#follow me
#GeniuSk101
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