# Types of Force

Before trying to understand what are the different types of forces, let us try to define what is a force.
Force is defined as the push or pull acting on an object resulting from the other object’s interaction with the object.

## The two types of force are:

• Contact forces: The contact forces are the forces which occurs when we apply some effort on an object. Following is the classification of contact force:
•  Spring Force Applied Force Air Resistance Force Normal Force Tension Force Frictional Force
• Non-Contact forces: The non-contact forces are the forces which occurs from a distance. Following is the classification of non-contact forces:
•  Electromagnetic Force Gravitational Force Nuclear Force

### Spring Force

This force works opposite to the displacement of molecules. Like in a spring or elastic rubber band etc.

### Applied Force

The force which is applied by our muscles is called applied force is also called muscular force. For example, pushing a box or kicking a ball etc.

### Air Resistance Force

The force exerted by a gas acting upon a body on the opposite direction is called air resistance force. The examples are the forces experienced by a skydiver or a downhill skier etc.

### Normal Force

It is referred to the force which acts when two surfaces are in contact. This force is perpendicular to the surface and acts in the direction out of the surface. For example, a box on top of a table.

### Tension Force

This type of force is experienced by a rope or a string which holds an object. The tension force is always a pull not a push. The tension force is same throughout the cable. For example, a ball hanging with the help of a string.

### Frictional Force

Frictional force acts when the objects on a surface is trying to moves relative to surface. For example, when a box is slided on a table.

### Electromagnetic Force

These are the magnetic and electric interactions between atoms and molecules which helps in binding and defining the structure of solids. For example, in a magnet, poles attract each other.

### Gravitational Force

The gravitational force is defined as the force acting between objects due to presence of matter. For example, Earth’s gravity acting upon objects and is given as:

 $F_{grav}=m\times g$

### Nuclear Force

The force responsible for the bonding of nucleus is known as nuclear force. For example, forces resulting in radioactive decay.

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