# Force ( Physics)

Force In Physics . The term comes from the Latin , fortĭa. What does it mean, Vigor, robustness and ability to move something or someone who has weight or resistance; like lifting a stone, throwing a bar, etc. Force is also the most vigorous state of something (like the strength of youth), a walled plaza for defense, a girdle that is sewn together to reinforce a fabric and people of war (military forces).

The first physicist to describe the concept of force was Archimedes , although he did so only in static terms. Galileo Galilei gave him the dynamic definition , while Isaac Newton was the one who could mathematically formulate the modern definition of force .

## History of Force In Physics

A force is always a mutual action that is exerted between two objects (external forces) or between two parts of the same object (internal forces). Thus, an object experiences a force when another object pushes or pulls it. If a billiard ball hits another one that is at rest and both move after colliding, it is because there are forces that act on each of the balls, since the two modify their movements. By itself, an object cannot experience or exert any force.

Forces always appear between objects in pairs of equal and opposite action and reaction, but they can never balance each other since they act on different objects.

Forces are measured by the effects they produce, that is, from the deformations or changes in movement they produce on objects. A dynamometer is a spring or spring graduated for different forces, whose modulus is indicated on a scale. In the International System of Units , force is measured in newtons: 1 newton (N) is the force that gives an object of 1 kg mass an acceleration of 1 m / s2.

The concept of force was originally described by Archimedes , albeit only in static terms. Archimedes and others believed that the “natural state” of material objects in the terrestrial sphere was rest and that bodies tended, by themselves, towards that state if they were not acted upon in any way. According to Aristotle, the perseverance of the movement always required an efficient cause (something that seems to agree with daily experience, where the forces of friction can go unnoticed).

Galileo Galilei ( 1564 – 1642 ) would be the first to give a dynamic definition of force, opposed to that of Archimedes, clearly establishing the law of inertia , affirming that a body on which no force acts remains in unchanged motion. This law, which refutes Archimedes’ thesis, is still not obvious to most people without scientific training today.

Isaac Newton is considered to be the first to formulate the modern definition of force mathematically , although he also used the Latin term vis (‘force’) for other different concepts. Furthermore, Isaac Newton postulated that the gravitational forces varied according to the inverse square law of distance.

Charles de Coulomb was the first to prove that the interaction between point electric or electronic charges also varies according to the law of the inverse of the square of the distance (1784).

In 1798, Henry Cavendish managed to experimentally measure the gravitational pull force between two small masses using a torsion balance . Thanks to which he was able to determine the value of the constant of universal gravitation and, therefore, he was able to calculate the mass of the Earth .

With the development of quantum electrodynamics , in the mid- 20th century , “force” was found to be a purely macroscopic quantity arising from the conservation of momentum or momentum for elementary particles. For this reason the so-called fundamental forces are often called “fundamental interactions”.

## Sides of Force

• Light Side. Jedi ideology

A Jedi always uses the Force for knowledge and defense . Never to attack. – Master Yoda

The Light Side of the Force is focused on the ideals of good, peace, humility and justice. A follower of the Light Side lives in harmony with the world around him, acting with wisdom and logic instead of anger, unfair judgment, and brute force. The largest group of followers and teachers of the Light Side is the Jedi Order. Dark Side: Sith Ideology

• The Dark Side of the Force is a path to many abilities that some consider unnatural. – Palpatine, (Darth Sidious)

The Dark Side of the Force is the element aligned with evil, hatred, resentment, and revenge . Sith gain Force powerthrough emotions, especially passion. Followers of the Dark Side gain power more quickly than Jedi; however, the Dark Side, although it is said to be more powerful at first, is more difficult to control and exerts an addiction on its followers, and also relatively destroys its body. Some well-known practitioners of the Dark Side were the Sith Lord Darth Sidious and his disciples: Darth Maul, Darth Tyranus, Darth Vader and Mara Jade, but we could also mention other powerful and legendary Sith such as: Darth Krayt, Darth Bane, Darth Malak, Darth Revan, Darth Nihilus “Lord of Hunger”, Darth Traya “Lady of Betrayal”, Darth Sion “Lord of Pain” and Darth Plagueis “The Wise” among others.