Contact and Non-Contact Forces

We apply force while doing different activities

In our house we pull the door to go outside.

When we want to move the furniture we push it.

Push or pull of an object is called as force.

Basically force is an interaction that causes an affected object to be pushed or pulled in a certain direction

From rest to motion and from motion to rest.

The force can be contact force and non-contact force

Contact force

A contact force arises when an object is in contact with some other object

Whenever two objects are in contact with each other, mutual contact forces exist between them.

Types of Contact Force

‘Friction’ force is contact with the surface and object.

A contact force can arise even when solids are in contact with liquids

Muscular force is used to lift weights.

Mechanical forces is used in machines.

Above are few examples of contact force

Non-Contact Forces

When you jump, you always return back to the surface

When you throw a ball high up in the air

It reaches the highest point and then it invariably return back to its thrower on the ground

These occurrences can be explained by the non-contact force

A non-contact force is a force applied to an object by another body that is not in direct contact with it

Non-contact forces come into play when objects do not have physical contact between them

When compared to the types of contact forces, there are very few non-contact forces

Force act on an object from a distance is called non-contact force.

Types of Non-Contact Forces

Gravitational Force: Gravitational force is responsible for bringing the items we toss into the air brings back to earth

Earth attracts everything towards the center because of gravity. this is a non-contact force.

Magnetic Force: Iron pins attracted in the presence of a magnet bar without any physical contact

Revision

A contact force arises when an object is in contact with some other object

Non-contact forces come into play when objects do not have physical contact between them

The End