# The Fascinating Science Behind the Repulsion of Positive Forces and Attraction of Negative Forces: Unveiling the Mysteries of Physics

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Positive forces are considered repulsive because they involve the pushing or separation of objects or particles. On the other hand, negative forces are considered attractive because they involve the pulling or attraction of objects or particles towards each other.

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Positive forces are considered repulsive because they involve the pushing or separation of objects or particles, while negative forces are considered attractive because they involve the pulling or attraction of objects or particles towards each other. This categorization is based on the convention of assigning positive charges to protons and negative charges to electrons.

To delve into this topic with more detail, we can explore the underlying concepts of positive and negative forces. In physics, forces are the interactions that can cause objects to accelerate or deform. They can be categorized as either attractive or repulsive depending on the nature of the interaction.

Positive forces, also known as repulsive forces, occur when two like charges (both positive or both negative) come into proximity and repel each other. It is the principle of like charges repelling that defines the nature of these forces. For example, if two positively charged particles are brought close together, they will push each other away due to their like charges. This repulsion is the result of the electric field created by the charges that exert a force pushing them apart.

On the other hand, negative forces, or attractive forces, occur when two opposite charges (one positive and one negative) are brought near each other. These forces are characterized by the phenomenon of opposite charges attracting each other. For instance, a positively charged particle and a negatively charged particle will be attracted to one another due to the electric field they create. This attraction is what we commonly observe in everyday scenarios, such as when a balloon rubbed with a cloth sticks to a wall due to static electricity.

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To further understand the concept of positive and negative forces, it is worth mentioning a quote from Richard Feynman, a renowned physicist, who said, “Like charges repel and unlike charges attract.” This succinctly captures the essence of the repulsive and attractive nature of positive and negative forces.

Here are some interesting facts related to positive and negative forces:

1. The concept of positive and negative charges arose from the experiments conducted by Charles-Augustin de Coulomb in the late 18th century.

2. The force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. This is known as Coulomb’s law.

3. Electric fields, which play a fundamental role in the interaction of positive and negative forces, can be visualized through field lines. Field lines emerge from positive charges and terminate on negative charges, indicating the direction of the force.

4. In addition to electric forces, there are other types of attractive and repulsive forces in nature, such as gravitational forces and magnetic forces. These forces also follow similar principles of attraction and repulsion.

To summarize, positive forces are considered repulsive because they involve the pushing or separation of objects or particles, while negative forces are considered attractive because they involve the pulling or attraction of objects or particles towards each other. Understanding these concepts allows us to comprehend the fundamental nature of electric interactions in our daily lives. As Richard Feynman said, “Like charges repel and unlike charges attract.” This notion is supported by Coulomb’s law, which quantifies the forces between charged objects.

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## See a video about the subject.

In the video “Attraction and Repulsion – Intro to Physics,” the speaker explores the concept of charge behavior in relation to attraction and repulsion. They highlight that charges can exhibit both attractive and repulsive forces, depending on whether the charges are opposite or like charges. Unlike mass, charge can be positive or negative. Opposite charges are found to attract each other, while like charges tend to repel. The speaker engages the audience by presenting a scenario in which two charges are held together and asks for predictions on what will happen when they are released.

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Explanation: If the particles are both positively or negatively charged, the force is repulsive; if they are of opposite charge, it is attractive.

The force between two charged particles is attractive if the particles are of opposite charge. If the two charges have the same signs, the force between the particles is repulsive. For example, if both charges are negative or if both are positive, the force between them is repulsive.

This means that the force between the particles is attractive. If the two charges have the same signs, Coulomb’s law gives a positive result. This means that the force between the particles is repulsive. For example, if both q 1 and q 2 are negative or if both are positive, the force between them is repulsive.

Explanation: The force is repulsive if the particles are both positively or negatively charged; it is attractive if they are of opposite charge.

Explanation: If the particles are both positively or negatively charged, the force is repulsive; if they are of opposite charge, it is attractive. This called Coulomb’s law and was the first attempt to understand the electric force. Like the gravitational force, the Coulomb force is an inverse square law.

Consider we have two charged particles Q and q at a separation r.

According to Coulomb’s Law, the magnitude of the force between the charged particles is given by

F=kQqr2.

Note: Force can never be negative. We just use the negative sign denoting the direction.

We know that like charges repel and unlike charges attract each other.

Now, consider the cases:

1. Both charged particles are positive

Since both the charges are positive, their product will give a positive value. This means they exert a repulsive force on each other.

2. Both charged particles are negative

Since both the charges are negative, their product will also give a positive value. This means they exert a repulsive force on each other.

3. One positive and another negative

Since one charged particle is positive and the other charged particle is negative, their product will give a negative value. This means they exert an attractive force on each other.

So, basically, it is just a sign convention, that for the rep…

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