Pressure
Pressure
Pressure : Pressure is defined as the force or thrust exerted over a unit area.
Pressure plays the same role in fluids as force plays in case of solids. Force is a vector quantity but pressure is a scalar.
The SI unit of pressure is , which is also called pascal (Pa) named after the scientist Blaise Pascal. It is a scalar quantity.
From the formula of pressure, it is clear that the same force can produce different pressures depending on the area over which it acts. The same force acting on a smaller area exerts a large pressure while a force on a larger area exerts small pressure.
Example: Force of 200 N is applied to an object of area . Find the pressure.
Solution : Given,
Now, Pressure,
Which of the following are correct : (a) Force is a vector quantity but pressure is a scalar. (b) Pressure is defined as the force or thrust exerted over a unit area. (c) Force is a scalar quantity but pressure is a vector. | |||
| Right Option : A | |||
| View Explanation | |||
Which of the following are correct : (a) Pressure is defined as the force or thrust exerted over a unit area. (b) Pressure is a scalar quantity. | |||
| Right Option : C | |||
| View Explanation | |||
Hary says water exerts pressure on the bottom of the bucket, but Robert says water exerts pressure on the wall of the bucket. Who is correct ? | |||
| Right Option : C | |||
| View Explanation |
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