The image above represents sum of forces acting on particle.

To compute for sum of forces acting on particle, two essential parameters are needed and these parameters are **Mass of Particle (m _{p}) **and

**Acceleration (a).**

The formula for calculating sum of forces acting on particle:

Σf = m_{p}.a

Where:

Σf = Sum of Forces Acting on Particle

m_{p} = Mass of Particle

a = Acceleration

Let’s solve an example;

Find the sum of forces acting on particle when the mass of particle is 12 and the acceleration is 4.

This implies that;

m_{p} = Mass of Particle = 12

a = Acceleration = 4

Σf = m_{p}.a

Σf = (12)(4)

Σf = 48

Therefore, the **sum of forces acting on particle **is **48 N.**