Thursday, December 9, 2021

Application of Force: Movement of Objects Around Us Through Contact and Non-contact Force

Let’s take a look at how non-contact and contact Forces differ in basic nature. Contact forces are forces that are created by two bodies that are in contact. For instance, the contact force is generated when you push tables against walls or pull something upwards since there is direct contact with the item you are pulling. Application of Force: Movement 

The force of non-contact acts between two bodies that aren’t in contact with each other. A piece of apple, for instance, was thrown over Newton due to the unobserved gravity force. Application of Force: Movement 

Let’s begin by understanding the Definition of Contact and Non Contact Force.

Contact Force Definition

A force that is only active when two bodies are in physical contact. Newton’s law 2 was addressed. It says using force against a mass that has mass ‘m’ will cause it to speed up. When the weight of the object is ‘m’ and the speed it attains when subjected by force equals’ a’, then the equation for force is:

F = ma

When we apply forces to the body, it increases its momentum equal to the force. 

The formula, Application of Force: Movement 

F= Δp/Δt.

Contact Forces: Which type of forces are these, and how do they work?

The following is a brief list of the different types of forces that contact: Application of Force: Movement 

  • The tension of the surface
  • Force of drag
  • Friction
  • Upthrust or Buoyancy force
  • The force used
  • Muscle power
  • Nature’s forces

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Examples of Contact Force

  1. Toss a football in the air, and it falls into the air before falling to the ground. Two types of forces are there. The ball starts by making an upward movement as a result of the force generated by our kick. It then executes a projection motion. Then because of air resistance or simply friction, the ball begins to slow down and finally comes to rest, i.e. down on the floor.
  2. A spring is extended from its resting position, and it will start to shift around its average position. The spring will return to its initial location after a certain period because of the effects of restoring the force.

What is Non-Contact Force?

A force that is not in contact with an object is the force placed on an object in a body that is not directly touched with the object. Non-contact forces are applied when objects don’t interact physically or when a force is applied with any interactions. 

As compared to the different types of contact forces, they are little non-contact forces.

Non-Contact Forces Types

  • Gravitational Force

Gravitational force is the reason we bring objects we throw into the air back to the earth. If an object rests on a floor, it produces a downward force equal to its weight. This downward force is referred to as gravity force.

The gravitational force is a force of attraction that exists between all bodies with mass. The sun’s gravitational force ensures that the earth and the planets in the solar system are in orbit fixed. The force of gravity does not have contact with any object to cause downward force.

  • Electrostatic Force

The electrostatic force is similar to the gravitational force. The only distinction is that the gravitational force works between mass while an electrostatic force is a force that acts between two charged bodies.

The human body is made up of tiny negative, positive or neutral particles. When you rub the comb over your clothing and then place it in a small area of paper, you’ll see pieces of paper laying on their ends, attracted by the comb. Charges opposite to each other attract one another, and similar charges repel. This is due to electrostatic forces.

  • Magnetic Force

Have you ever tried a magnetic object? Does it not feel like magic? If you’ve ever got two magnets, you can try joining the ends. In one instance, the ends will attract each other with great force. In another instance, regardless of how you do, the ends will not come into contact.

Even if you press both ends towards each other and then leave it, it bounces off. This is due to magnetic force. It also is responsible for the magnetism of iron through magnets. The force of magnets decreases with a greater distance between the magnet. 

Examples of Non-Contact Force

A variety of Non-Contact Force examples from our everyday life are listed below:

  1. A fallen apple from the tree is among the finest examples of force that is non-contact.
  2. The proximity attracts iron pins to a magnetic bar with no physical contact.
  3. Raindrops falling on the earth is another illustration of a force that isn’t in contact.
  4. The hair’s charging and the attraction of the paper pieces toward it.
  5. Two magnets are placed near each other. This can also be a non-contact force illustration.
  6. The ball’s freefall toward the earth is due to the force of gravity.
  7. The falling leaves of a tree are an illustration of force that is not in contact.
  8. Electromagnetism is a different instance of a force that isn’t a contact force.
  9. There are a variety of electrostatic examples that demonstrate the attraction of tiny materials toward an object.
  10. When an electric charge passes through iron, transforming to an electromagnet, it draws iron and particles, showing non-contact force properties.
Contact Forces Non-Contact Forces​
Only when there is physical force (push or pull) on the object will the forces take effect. These forces are not visible by nature and can be triggered without physical effort.
Vector fields are used to show forces of contact. Forces that aren’t in contact can’t be represented with vector fields.
The contact force isn’t connected to any field The force of non-contact is linked to the field.
Because of tension between the palms, friction between two body parts in contact, for example, touching palms, creates heat. Due to the effects on gravity, the ball suspended in the sky eventually falls to the earth.
If the bus suddenly stops, a sleeping man is woken up. If two North poles of two magnets meet, they repel one another. If you alter either of the magnets, you’ll observe that they pull one another.

 

Conclusion

Contact and non-contact forces aren’t tough to understand; just the example proves to be vital here. You can certainly impress the teacher by narrating some amazing real-life examples of both types of forces and earning marks! Understanding the examples is enough in understanding the difference.

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