Pressure


 
 
Concept Explanation
 

Pressure

Pressure: When you press down the handle of a bicycle pump, the pressure of air within the pump increases and this in turn inflates the bicycle tyre. When you push the handle of a bicycle pump you apply a force on the surface area of its piston. So, the effect of a force also depends on the area of the object over which it works. “This effect of force on a given area is called Pressure.” Thus, we conclude that pressure depends on two factors:

1. Force applied and

2. Area over which force acts.

Pressure is the force per unit area. Pressure = Force/ Area

Example: Force of 200 N is applied to an object of area large 4;m^{2}. Find the pressure

Solution: Given,   large force, F=200;N,A=4;m^{2}

Now,   Pressure, large large P=frac{Force(F)}{Area(A)}=frac{200}{4}=50;Nm^{-2}=50Pa

Sample Questions
(More Questions for each concept available in Login)
Question : 1

The surface area of the base of a brick X is 100  cm^2. The surface area of the base of the brick Y is 250 cm^2. Each brick weighs 100 N. Which of the following is correct if P_1; and ; P_2 are the pressures exerted by the bricks X and Y respectively ?

Right Option : B
View Explanation
Explanation
Question : 2

A mountain climber experiences a nose bleed due to:

Right Option : A
View Explanation
Explanation
Question : 3

In cities water supply from an overhead tank to the houses is done due to.

Right Option : B
View Explanation
Explanation
 
 
 


Students / Parents Reviews [20]