Solved Example on Pressure

Example 1: The mass of an object is 50 kgs and the object is accelerating at 2 m/sec². This object strikes a surface of area 5 m². Find the pressure exerted by the object on the surface.

Solution:

Given

• Mass = 50kgs
• Acceleration (a)= 2 m/sec²
• Area of surface (A) = 5 m²

Using force formula,

Force (F) = Mass × Acceleration

F = 50 × 2

F= 100 N

Now using the Pressure formula as,

P = F/A

P = 100/5

P = 20 Nm^-2

The, pressure exerted by object o surface the surface is, 20 Nm^-2

Example 2: An object is being pushed with a force of 50N and the base of the object is 10m², What will be the pressure exerted by the object on the surface?

Solution: 

Given,

• Force = 50 N
• Area = 10 m²

Pressure = Force/Area

P = 50/10

P = 5 N/m²

Thus, the pressure applied on the object is, 5 N/m²

Example 3: An object exerted a pressure of 10N/m², and the area for which the pressure is applied is 30m². Find the amount of Force required.

Solution:

Given: 

• Pressure (P) = 10N/m²
• Area (A) = 30m²

We know that, 

P = F/A

F = P × A

F = 10 × 30 = 300 N

Thus, the force exerted by the object is, 300 N.

Pressure is the force applied per unit area of an object. It is also called the per unit force on an Area. There are various types of pressure that we encounter in our daily life including atmospheric pressure, Gauge pressure, etc. Pressure is calculated by taking the ratio of the force applied to the surface area of the object.

In this article, pressure, its formula, its types, and others are in detail.