A force is a push or pull on an object that results from the object's interaction with another object. Whenever there is an interaction between two objects, there is a force on each of the objects. When the interaction ceases, the two objects no longer experience the force. Forces only exist as a result of an interaction.
Formula:
The amount of force is expressed by the vector product of mass (m) and acceleration (a). The force equation or formula can be expressed mathematically in the form. For easy calculation of Force and Acceleration their is best online calculator https://www.meracalculator.com/physics/classical/force.php
F = ma
Where,
m = mass
a = acceleration
It is articulated in Newton (N) or Kg m/s2.
The acceleration a is given by
a = v / t
Where
v = velocity
t = time spent
So Force can be articulated as:
F = mv / t
The inertia formula is called p = mv, which can also be articulated as Momentum.
Therefore, Force can be articulated as the rate of change of momentum.
F = p/t = dp/dt
Force formulas are beneficial in finding out force, mass, acceleration, moment, and velocity in any given problem.
Unit of force
In the second centimeter gram unit system (CGS unit), the force is expressed in dynes.
In the international standard system of unit (SI unit) it is expressed in Newton (N).
Types of force
Force is a physical cause that can change the state of motion or the dimensions of an object.
There are two types of forces according to their applications:
  1. Contact force
  2. Non-contact force
Contact force:
Forces acting on a body, either directly or through a medium, are called contact forces.
Examples of contact forces are:
  • Muscular strength
  • Mechanical force
  • Friction force
Non-contact force:
Forces acting through spaces without making direct contact with the body are called non-contact forces.
Examples of non-contact forces are:
  • Gravitational force
  • Electro-static force
  • Magnetic force
Example:
Q.1) How much net force is required to accelerate a 1000 kg car at 6.00 m/s2?
Solution:
Given,
a = 6.00 m/s2
m = 1000 kg
Therefore,
F = ma
= 1000 × 6
= 6000 N