Non - Contact Force

List and Examples of Non Contact Forces


Force can be characterized as a push or a draw that changes or will in general change the condition of rest or uniform movement of an item or alters the course or state of an article. It makes objects quicken or add to their general weight. In basic terms, it is a push or a draw on an item that happens when two articles associate. It is the fundamental reason for movement from rest.

Unit of Measurement

It is estimated in 'Newton' (N). Newton estimates the force expected to move, quicken or accelerate objects. The essential recipe for it is, F = m.a, where, 'm' represents the mass in kilograms and 'a' represents increasing speed in m/sec2. It might likewise be estimated in Pounds.

What are scalar and vector quantities?

A scalar quantity just has a magnitude (a numerical amount, estimate), however no particular course.
Example: speed (m/s), remove, mass, time, temperature (K or C), potential contrast (V), current (A)
A vector amount has both (size) and the explicit course.

Example: speed (m/s), the rate of progress of position in a particular course (contrast and speed previously)
(you can consider 'speed in a specific heading’ yet take care by the way you utilize the words speed and speed!)
acceleration (m/s2), the rate of increment in speed in a particular bearing
force (mass x speed) 

ALL forces are vector amounts, for example, electrostatic, gravitational, attractive, pushing, pulling, pressure, pressure
On diagram vector amounts are normally portrayed with a bolt, the length of the bolt can demonstrate the size and the edge of the bolt demonstrates the course along which the amount demonstrations.

In the diagram above, you have two cyclists going at a similar speed of 2 m/s, however in inverse bearings. In this way, even though they have a similar speed (same length of a bolt), they have diverse speeds since they are going in various ways. Note that the speed of the left cyclist is formally given a negative sign to demonstrate the other way of movement (it doesn't mean going slower or backing off!). 

Force is a Vector Quantity

To characterize the force acting upon an item totally it requires the magnitude as well as data with respect to the bearing of the force. Therefore, 10 Newton is definitely not a full depiction of the force following up on an article. Conversely, 10 Newton, descending is a finished depiction of the force following up on an article; both the extent (10 Newton) and the heading (descending) are given.

A force is a vector that has a bearing so to speak to a force in a diagram usually an arrow is used. Such a diagram is called a vector diagram and are utilized all through the investigation of material science. These diagrams are likewise used to draw the free body diagram of any physical framework. The extent of the bolt infers the size of the force and the bearing of the bolt uncovers the course that the force is acting.

Besides, if any item is very still or rather in harmony, it tends to be inferred that the forces following up on the article are dropping one another and henceforth the net force is 0. For instance, the impact of a 20-Newton upward force following up on a book is dropped by the impact of a 20-Newton descending force following up on the book. In such occurrences, it is said that the two individual forces balance one another; there would be no uneven force following up on the book.

Different circumstances could be envisioned in which two of the individual vector forces drop one another ("balance"), yet a third individual force exists that isn't adjusted by another force. For instance, envision a book sliding over the harsh surface of a table from left to right. The descending force of gravity and the upward force of the table supporting the book demonstration in inverse ways and in this manner balance one another. Notwithstanding, the force of contact acts leftwards, and there is no rightward force to adjust it. For this situation, an uneven force follows up on the book to change its condition of movement.

Types of Forces

There are distinctive sorts of forces in the Universe. In view of the idea of the cooperation between two bodies, they can be ordered into two primary classifications viz. 

  • • Contact Forces.

  • • Non-Contact Forces

  • Contact Forces

    These happen when objects contact one another. For example, when you kick a ball or pull a seat. They can additionally be named as follows:

    1. Tensional: When a string or wire is held rigid, the finishes of the string or string (or wire) pull on whatever bodies are appended to them toward the string. This is known as Tension. 

    2. Spring: The force applied by a packed or extended spring upon an article that is joined to it is known as Spring Force. An article that packs or stretches a spring is constantly determined toward the path that re-establishes the item to its rest or harmony position. For most springs (explicitly, for those that are said to comply "Hooke's Law"), the greatness of this drive is specifically relative to the measure of stretch or pressure of the spring.

    3. Normal Reaction: When a body applies a force on another, the second gives a response which acts opposite to the outside of the second body. This is known as the typical response. 

    4. Friction: The force applied by a surface as an article moves crosswise over it or tries to move crosswise over it is called Friction. There are no less than two sorts of grating force – sliding and static grinding. For instance, on the off chance that a book slides over the outside of a work area, at that point the work area applies a contact drive the other way of its movement. Contact results from the two surfaces being squeezed together intently. 

    5. Air Resistance: This is an extraordinary sort of contact that follows up on articles as they travel through the air. The force of air opposition is regularly seen to restrict the movement of an item. It is most detectable for items that movement at high speeds (e.g., a skydiver or a declining skier) or for articles with substantial surface zones. 

    6. Weight: It is a field drive with which a body is pulled towards the focal point of the earth because of its gravity. It has the greatness mg, where m is the mass of the body and g is the increasing speed because of gravity.

    Non-contact Force

    Non-contact Force can be characterized as: 

    Powers which become possibly the most important factor when two articles don't have any physical contact between them.
    or on the other hand 

    At the point when power is connected to somebody by another article with no association or contact is called Non-contact drive. 

    or then again 

    In a Non-contact constrain the power data is transmitted over separation.

    Examples of Non-Contact Forces are:

  • 1. Gravitational force

  • 2. Magnetic force

  • 3. Electrostatics

  • 4. Nuclear force

  • It contrasts from the contact drive as in physical contact isn't required here.
    It is intriguing to take note of that inception of all contact powers can be followed to non-contact powers.

    Non-contact Force List:

    The rundown is comprehensive. When contrasted with contact powers, there are just a couple of Non-contact powers.
    Some of them are: 

    1. Gravity
    2. Magnetism
    3. Electrostatics
    4. Strong Nuclear power
    5. Weak Nuclear power

  • • Gravity

  •  Gravitation or Gravity is a procedure by which bodies with physical weight, nonetheless, little it is, are pulled in towards earth surface. They are pulled in by a power which is corresponding to their weight. Gravitation is in charge of keeping every one of the planets in their individual circle around the sun and is the Non-contact drive taking care of business.

    The Universal law of attractive energy can be expressed as:

    "Each molecule known to man draws in each other molecule with a power that is specifically corresponding to the result of their masses and contrarily relative to the Square of the separation between them". Mathematically, it very well may be expressed as:

    $F = G\frac{{{m_1}{m_2}}}{{{r^2}}}$
    F = power of attractive energy in Newton

    G = gravitational steady with esteem 6.673 ×× 10-11m3 kg-1s-2

    m1 = mass of article 1

    m2 = mass of item 2

    The heading of power is from the body followed up on towards the body applying it. The heaviness of the human body is likewise a Non-contact constrain applied by earth on the human. 


  •  It is a property by the excellence of which certain extraordinary substances called 'magnets' apply an uncommon power on different magnets or substances made up of iron. This power is called attractive power which is a sort of Non-contact constrain as the materials simply should be in the region of the magnet. 

    This is Non-contact on the grounds that there is no physical contact between the materials. This power is because of the attractive field created around the magnet. These magnets have two posts called South and North. Like shafts repulse one another while not at all like posts draw in each other. Magnetic fields are Non-contact powers as they push or force objects without contacting them. They show these properties just on a couple of attractive materials, not on all. 


    There are numerous sorts of attraction like:
    1. Diamagnetism
    2. Ferromagnetism
    3. Paramagnetism
    4. Antiferromagnetism
    5. Electromagnetism

  • • Electrostatic Force

  •  Electrostatics is about fascination and shock of charges and is another kind of Non-contact drive. A few materials have unique properties of creating a charge on their surface once they are scoured like golden. These materials at that point draw in inverse charges and subsequently show the property of electrostatics. 
    It is completely supported to be called Non-contact powers as the charges don't should be in physical contact so as to repulse or draw in. 

  • • Strong Nuclear Force

  •  The power acting in the core is called atomic power as the name recommends. On a bigger dimension the power ties protons and nucleons together, they structure the core. These are the most grounded of all the four major powers.
    They are additionally called Non-contact powers since they act with no physical contact between particles. These power demonstrations similarly between two protons, between two neutrons and among proton and a neutron. The scope of this power is exceptionally little in spite of the fact that it is the most grounded of all.

  • • Weak Nuclear Force

  •  This is an extraordinary power and consequently shows up in not very many procedures like beta rot of a core. This is in charge of the procedure of hydrogen rot in the stars.

    Non-contact Force Examples

    There are different precedents from our everyday life portraying Non-contact compels, some of them are: 

    1. Apple tumbling down from the tree is the best and most prevalent case of Non-contact constrain, viz. gravity.
    2. Iron pins being pulled in when in the region of a magnet with no physical contact.
    3. Repulsion power, when two magnets are near one another is additionally a case of Non-contact constrain.
    4. The charging of the hair and fascination of paper bits towards it.
    5. Falling of downpour drops on earth is additionally a case of Non-contact-compel.
    6. The freefall of quill towards earth is by the righteousness of gravity.
    7. There are numerous genuine models from electrostatics demonstrating the fascination of little materials towards articles.

    Non-contact compel is available in our day by day lives and can be knowledgeable about numerous viewpoints. Electromagnetism is another case of it. At the point when power is gone through iron changing over it into an electromagnet, it draws in particles and iron towards it, along these lines, showing properties of Non-contact constrain.