[Physics Class Notes] on Force of Attraction Formula Pdf for Exam

The force of attraction is a force that draws the body close to it due to an attraction. In nature, several attraction forces exist. These are the electric force, magnetic force, electrostatic force, gravitational force, and electromagnetic force. Gravitational force is a well-recognized force that attracts the body towards it despite the distance. Through Newton’s Gravitational force we get a lot of clarification regarding this force and how it operates. It states that the mass existing in the Universe attracts some or other mass prevalent in the universe. It validates that anything that is thrown up eventually comes down. The formula of the force of attraction is based on this theory. 

Representation of Force of Attraction Equation

Suppose there are two masses denoted by ma and mb separated by a space. Then the force of attraction formula is stated by 

 

Fg = [frac {(G m_a m_b)} {d^2}]

 

Where, 

 

F= force of attraction

 

G= gravitational constant

 

ma= mass of the first object a

 

mb= mass of second object b

 

d = distance between two objects d

 

This force of attraction formula helps in the calculation of any two bodies having a greater mass as the smaller mass is insignificant. 

 

Even when things are not in close proximity, the force of attraction draws them together. Learn about the three forces of gravitational, electrical, and magnetic attraction, as well as their formulae and concepts.

What is meant by Gravity?

Gravity is probably the most well-known force of all. We people on Earth imagine gravity as an apple landing on Isaac Newton’s head. It is only due to the gravity that we observe things falling to the ground. Similar instances occur throughout the universe as well. However, this is merely our perception of gravity. In reality, just as the earth pulls the apple towards it owing to gravity, the apple also pulls the earth. The problem is that the earth is so enormous that the gravitational interactions of every other item on the globe are overwhelmed. 

Every item with mass has a gravitational pull on everything else. This force explains why the planets orbit, among other reasons. Furthermore, everything, including you, pulls every other object in the cosmos, which is known as Newton’s Universal Law of Gravitation. The acceleration of the moon as compared to the acceleration of things on Earth by Issac Newton. Newton was able to derive an important conclusion regarding the dependency of gravity on distance by believing that gravitational forces were responsible for each. He came to the conclusion that the gravitational pull between the Earth and other things is inversely proportional to the distance between the Earth’s center and the object’s center based on this comparison. However, distance isn’t the only factor that influences the amplitude of gravitational forces.

What Do You Mean by Electric Force?

The electric force, also known as the electrostatic force, is the second force that may induce attraction. While gravity affects mass things, electrostatic forces impact charge objects. The quantity of electrons and protons in a thing determines its charge. Most items are electrically neutral, which means they contain an equal number of electrons (which have a negative charge) and protons (which have a positive charge). Objects can, however, lose electrons and become positively charged, or absorb electrons and become negatively charged. As a result, positive and negative charges will attract one another. As a result, the adage “opposites attract” is true.

What is Magnetic Force?

The magnetic force is the third force that may produce attraction. Objects with magnetic characteristics are attracted by the magnetic force. A magnet attracts iron-rich metals, such as steel, as well as nickel and cobalt. When a north magnetic pole is placed close to a south magnetic pole when an object is magnetized, the magnetic force is attracted. Electric currents are the primary source of magnetism. There is an electric current when charges move. The electric force affects charges that do not move, while the magnetic force affects charges that move. The proverb ‘Opposites attract’ may also be explained by magnetic attraction.

Factors affecting the Three Forces of Gravitational, Electrical, and Magnetic Attraction

The gravitational force is equal to the product of the masses, m1 and m2, and inversely proportional to the square of the distance between the two masses, denoted by r. The attraction is inversely proportional, which implies that it is strong when the masses are near to each other and weak when they are far apart.

The force of electrical attraction is proportional to the product of the charges, and it is inversely proportional to the square of the distance between the charges, exactly like gravitation. There exists an attraction between a positive and a negative charge separated by r.

The force is stronger when the charges are near to one another, and weaker when the charges are further apart, just as the gravitational force.

Metal atoms contribute electrons to nonmetal atoms when metals and nonmetals combine to create compounds. Because of the loss of negatively charged electrons, metal atoms become positive ions, whereas nonmetal atoms become negative ions. Ions display attraction forces toward ions with opposite charge, giving rise to the saying “opposites attract.” Coulomb’s law governs the force of attraction between oppositely charged ions: F = k * q1 * q2 / d2, where F is the force of attraction in Newtons, q1 and q2 are the charges of the two ions in coulombs, d is the distance between the nuclei of the two ions in meters, and k is a proportionality constant of 8.99 x 109 Newton square meters per square coulomb.

Conclusion 

The formula of force of attraction is important to understand the concept of gravity that works on the earth. Moreover, when we calculate force of attraction it also explains the gravitational phenomenon that happens in space. 

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