what is the physical quantities of non contact Force
Answers
Answer:
The most familiar non-contact force is gravity, which confers weight. In contrast a contact force is a force applied to a body by another body that is in contact with it. All four known fundamental interactions are non-contact forces: Gravity, the force of attraction that exists among all bodies that have mass.
Answer:
Explanation:
What is 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 or when a force is applied without any interaction. When compared to the types of contact forces, there are very few non-contact forces.
Non-Contact Forces Types
Gravitational Force
Gravitational force is responsible for bringing the items we toss into the air back to earth. When an object is resting on a surface it is exerting a downward force equal to its weight and this downward force is known as Gravitational force.
The gravitation is a force of attraction that exists between all bodies that have mass. The gravitational force of the sun keeps the Earth and all the other planets of the solar system is a fixed orbit. Gravitational force does not need to be in contact to exert its downward force.
Electrostatic Force
The electrostatic force is very similar to the gravitational force, the difference here is that gravitational force acts between masses and an electrostatic force acts between two charged bodies.
Non-Contact Force: Electrostatic force
If you rub a comb on your clothes and then hold it near tiny pieces of paper you will see the bits of paper standing on their end attracted to the comb. We are made of tiny positive, negative and neutral particles. The opposite charges attract each other and like charges repel. This is the result of electrostatic forces.
Magnetic Force
Have you ever used a magnet? Doesn’t it feel like magic? If you ever have two magnets, try joining their ends. In one case, the ends will attract each other vigorously. In another case, no matter how hard you try, the ends will never make contact.
Non-Contact Force: Magnetic Force
Even if you push the ends together, the second you leave it, it will bounce off. This is the result of Magnetic force. It is also responsible for the attraction of iron by a magnet. The magnetic force exerted by a magnet decreases with the increase in the distance from a magnet. Read what is a Force and other types of forces like Contact Force.
Examples of Non-Contact Force
Various Non-Contact Force examples from our daily life are provided below.
An apple falling down from a tree is one of the best examples of non-contact force.
Iron pins attracted in the presence of a magnet bar without any physical contact.
Falling of raindrops on earth is also an example of non-contact force.
The charging of the hair and attraction of paper bits towards it.
Two magnets are placed close to each other is also a non-contact force example.
The freefall of a ball towards earth is by the virtue of gravity.
Leaves falling from a tree is an example of non-contact force.
Electromagnetism is another example of a non-contact force.
There are various examples from electrostatics showing the attraction of small materials towards an object.
When an electric current is passed through iron converting it into an electromagnet, it attracts iron and particles towards it, thus, displaying non-contact force properties.