Difference Between Force and Pressure
Last Updated : 15 Apr, 2025
Force is a vector quantity, indicating both magnitude and direction, while pressure is a scalar quantity that considers magnitude only. Force represents the interaction between objects, causing motion or deformation, while pressure measures the force applied per unit area.
The main difference between force and pressure lies in their nature and application. In this article, we will learn the key difference between Force And Pressure in detail.
What is Force?
Force is a physical quantity that represents the interaction between objects, causing them to accelerate, decelerate, or change direction. It is a vector quantity, meaning it has both magnitude and direction. It is measured in newtons (N) using devices like force meters.
Force Formula
Force formula is given by Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. Mathematically, it is represented as:
F = m × a
Where
- F is the force acting on the object (measured in newtons, N),
- m is the mass of the object (measured in kilograms, kg),
- a is the acceleration of the object (measured in meters per second squared, m/s2).
Also Read, Normal Force Formula
What is Pressure?
Pressure is a physical quantity that measures the force applied perpendicular to the surface of an object per unit area. It is a scalar quantity. It is measured in pascals (Pa) or pounds per square inch (psi). Pressure can cause deformation, compression, or expansion of materials.
Pressure Formula
Pressure formula relates the force applied perpendicular to the surface of an object to the area over which it is distributed. Mathematically, it is expressed as:
P = F/A
Where:
- P is the pressure exerted (measured in pascals, Pa),
- F is the force applied perpendicular to the surface (measured in newtons, N),
- A is the area over which the force is distributed (measured in square meters, m²).
Check, Types of Pressure
Difference Between Force And Pressure
The differences between force and pressure is illustrated in the table below:
| Aspect | Force | Pressure |
|---|
| Definition | Force is a push or pull acting upon an object. | Pressure is the force applied perpendicular to the surface of an object per unit area. |
|---|
| Nature | Vector quantity, having both magnitude and direction. | Scalar quantity, only magnitude is considered. |
|---|
| Formula | F = ma, where F is force, m is mass, and a is acceleration. | P = F/A, where P is pressure, F is force, and A is area. |
|---|
| Units | Measured in newtons (N). | Measured in pascals (Pa) or pounds per square inch (psi). |
|---|
| Direction | Can act in any direction. | Acts perpendicular to the surface. |
|---|
| Effect | Causes objects to move or change direction. | Applies force uniformly over an area, causing deformation or change in state. |
|---|
| Examples | Pushing a car, lifting a book, gravitational pull. | Air pressure, water pressure, tire pressure. |
|---|
| Measurement | Measured using a force meter or spring scale. | Measured using a pressure gauge or manometer. |
|---|
| Application | Used in various fields like physics, engineering, and sports. | Utilized in engineering, meteorology, and medical diagnostics. |
|---|
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