Types of Forces
The simplest definition of a force is that a force is a push or a pull action applied or experienced by an object. Forces go in pairs, by this we mean that when an object pushes or pull another object, it experiences a ‘response’ force that acts against it. Say you kick a ball, the ball also ‘kicks back’ in essence. If you hit a wall, it will hit back ( I am sure you will agree easily with this one).
Forces are put into two groups in general. One group is called the contact forces and the other is called non-contact forces.
Contact forces are the kind of forces that exist when two objects touch each other. These force include friction, tension and compression.
Non-contact forces are the ones that does not require objects to touch. Electrostatic force, magnetic force and gravitational force are examples of a non-contact force.