Do you calculate energy
Publish: 2021-04-19 20:55:54
1. Force is not energy
Introction:
energy is the description of all macro and micro material motion. Corresponding to different forms of motion, energy is divided into mechanical energy, intramolecular energy, electrical energy, chemical energy, atomic energy, internal energy and so on
in the process of all energy conversion, the total energy remains unchanged, because the energy of the total system is transferred among the systems. When energy is lost from one system to another, another system will get the lost energy, resulting in the balance between loss and gain, so the total energy does not change. This Law of conservation of energy was proposed in the early 19th century and applied to any isolated system. According to nott's theorem, the conservation of energy is a natural result that the laws of physics do not change with time.
Introction:
energy is the description of all macro and micro material motion. Corresponding to different forms of motion, energy is divided into mechanical energy, intramolecular energy, electrical energy, chemical energy, atomic energy, internal energy and so on
in the process of all energy conversion, the total energy remains unchanged, because the energy of the total system is transferred among the systems. When energy is lost from one system to another, another system will get the lost energy, resulting in the balance between loss and gain, so the total energy does not change. This Law of conservation of energy was proposed in the early 19th century and applied to any isolated system. According to nott's theorem, the conservation of energy is a natural result that the laws of physics do not change with time.
2. First of all, to clarify a conceptual problem, 1. The transfer of energy is the mutual transfer of the same form of energy, and it does not change into another form of energy. 2. The conversion of energy is the transfer of different forms of energy.
I think you should know that there are three ways of energy transfer: work, heat transfer, and radiation.
since we are talking about the relationship between force and energy, In other words, if the force does not do work, there will be no energy change. Change does not mean there is energy conversion. Energy conversion refers to the transfer and change between different forms of energy. Then we need to know what kinds of energy there are. Energy is divided into mechanical energy and internal energy, Mechanical energy includes kinetic energy and potential energy. The most obvious reaction of internal energy is that we can feel its temperature change. So the problem becomes to analyze whether the force on the object does work on the object? Then, whether the process of work is the change of different forms of energy.
let's talk about work. Work refers to the change of position of an object under the action of a force along the inner direction. Multiplying the force and the change of position is work. We use w to indicate work, f to indicate force, and s to indicate the change of position, When the object moves along the direction of the force under the action of the force, w = f * s. here, it is argued that two conditions must be satisfied to do work on the object: 1. Strong action and the resultant force is not zero; 2. The direction of motion and the direction of force are the same or have an angle, which is not equal to 90 degrees. When the above two conditions are met, the force will do work on the object, After knowing these, let's answer your second question, non-equilibrium force, because its resultant force is not zero, satisfies the first condition, then if its direction of motion and the direction of resultant force are not 90 degrees, there will be energy changes, but whether there is energy conversion here is another matter, If you rub your hands there, it's kinetic energy converted into internal energy. If it's an internal combustion engine, it's an automobile engine, it's internal energy converted into kinetic energy. If it's a moving object pushing another object forward, When kinetic energy is transferred from one object to another, there is no energy conversion.
when the balance force is applied, the resultant force is zero, that is to say, no work is done. That is to say, the kinetic energy of the object cannot be changed, but it does not mean that there will be no energy change and conversion. For example, if a long wooden block is placed on a table, there is an object sliding on it, but the long wooden block does not move, That is to say, the long wood block is subjected to a balance force, but because its upper surface is subjected to sliding friction, then the upper force will do work, there will be energy changes, and there will also be energy conversion, that is, kinetic energy changes into internal energy.
to sum up, the balance force for each component of the force, If there is energy conversion instead of balance force, it's not sure.
as for pushing the box, if you don't push it, it means that you do work on the box, but the biological characteristics make you do work on yourself, and the biological energy turns into heat energy, which is lost.
in addition, if you want to fully understand the relationship between force and energy, You have to finish high school to fully understand. This is only a general introction, which should still let you have a lot of conceptual questions. As an understanding, I think you can just have a look, without further study. As you learn more knowledge, you will naturally understand.
I am a graate student of physics in China University of science and technology
I think you should know that there are three ways of energy transfer: work, heat transfer, and radiation.
since we are talking about the relationship between force and energy, In other words, if the force does not do work, there will be no energy change. Change does not mean there is energy conversion. Energy conversion refers to the transfer and change between different forms of energy. Then we need to know what kinds of energy there are. Energy is divided into mechanical energy and internal energy, Mechanical energy includes kinetic energy and potential energy. The most obvious reaction of internal energy is that we can feel its temperature change. So the problem becomes to analyze whether the force on the object does work on the object? Then, whether the process of work is the change of different forms of energy.
let's talk about work. Work refers to the change of position of an object under the action of a force along the inner direction. Multiplying the force and the change of position is work. We use w to indicate work, f to indicate force, and s to indicate the change of position, When the object moves along the direction of the force under the action of the force, w = f * s. here, it is argued that two conditions must be satisfied to do work on the object: 1. Strong action and the resultant force is not zero; 2. The direction of motion and the direction of force are the same or have an angle, which is not equal to 90 degrees. When the above two conditions are met, the force will do work on the object, After knowing these, let's answer your second question, non-equilibrium force, because its resultant force is not zero, satisfies the first condition, then if its direction of motion and the direction of resultant force are not 90 degrees, there will be energy changes, but whether there is energy conversion here is another matter, If you rub your hands there, it's kinetic energy converted into internal energy. If it's an internal combustion engine, it's an automobile engine, it's internal energy converted into kinetic energy. If it's a moving object pushing another object forward, When kinetic energy is transferred from one object to another, there is no energy conversion.
when the balance force is applied, the resultant force is zero, that is to say, no work is done. That is to say, the kinetic energy of the object cannot be changed, but it does not mean that there will be no energy change and conversion. For example, if a long wooden block is placed on a table, there is an object sliding on it, but the long wooden block does not move, That is to say, the long wood block is subjected to a balance force, but because its upper surface is subjected to sliding friction, then the upper force will do work, there will be energy changes, and there will also be energy conversion, that is, kinetic energy changes into internal energy.
to sum up, the balance force for each component of the force, If there is energy conversion instead of balance force, it's not sure.
as for pushing the box, if you don't push it, it means that you do work on the box, but the biological characteristics make you do work on yourself, and the biological energy turns into heat energy, which is lost.
in addition, if you want to fully understand the relationship between force and energy, You have to finish high school to fully understand. This is only a general introction, which should still let you have a lot of conceptual questions. As an understanding, I think you can just have a look, without further study. As you learn more knowledge, you will naturally understand.
I am a graate student of physics in China University of science and technology
3. Force is not energy. The effect of force can only be shown through the object exerting force and the object under force, that is to say, they are indispensable. Energy can only be transmitted to the next object through force. If there is no force, energy can only be stored in the object exerting force, and force is only a tool for energy transmission.
4. These two are essentially not related, one is vector, the other is scalar. But it has something to do with work. The transfer of energy needs the medium of "work done by force". The work done by force transfers the energy and makes one energy become another. As the name suggests, the change of energy needs the push of force
work done by force leads to energy transfer and energy change. Therefore, energy can not be transformed and transferred without the work of force!!
work done by force leads to energy transfer and energy change. Therefore, energy can not be transformed and transferred without the work of force!!
5. Energy is one of the inherent properties of objects
force is the interaction between objects
driving piles into the ground consumes energy. The transmission of mechanical energy must be accompanied by force.
force is the interaction between objects
driving piles into the ground consumes energy. The transmission of mechanical energy must be accompanied by force.
6. In our common people's vocabulary, force and energy are the same concept. For example, wind energy can also be called wind energy, electricity, heat, heat, electromagnetic force, electromagnetic energy, nuclear force, nuclear energy, and so on
what is force? What can it be? The common people believe that wind in motion will be represented by wind, wind, and water in motion will be represented by water. Water energy, heat or heat energy is represented by the irregular motion of atoms or molecules, and nuclear force or nuclear energy is also represented by protons and neutrons in motion. wait. There are different levels of material in the world, there are different kinds of material are moving, therefore, there will be different properties of force or energy. Therefore, the common people believe that force or energy is the nature of a function of matter in motion. Force or energy belongs to the existence category of nature
some people think that force is the interaction between objects. This view is wrong or one-sided. Because function can be understood as both a nature and a process. If understood as a process, then, before the interaction between objects, does the force or energy not exist? Is force or energy proced in the process of interaction between objects? Or is it shown? These are two different concepts. Performance refers to the original existence, only in a certain situation to show. Therefore, we must first understand the relationship between existence and performance
Newton defined force as that the acceleration of an object is proportional to the external force. Or force = mass times acceleration. Obviously, Newton expressed the force as a result of the interaction between objects. The result is only a phenomenon, and the definition of force must reflect the essence and the reasons behind the phenomenon. Therefore, I think Newton's definition of force is wrong or one-sided
matter exists objectively, so does the motion of matter, and the existence of force or energy as the nature of motion. Force or energy generally exists in the material world. As long as the material in the material world is moving, force or energy exists. Like the mass and momentum of material, it is an original, original and unexplained existence. Of course, like mass and momentum, they are also conserved in terms of the total amount of existence in the material world The quantity of force or energy is conserved
from the more precise or accurate point of view of scientists, there is still a difference between force and energy. Force is mainly applied to the interaction between single objects in macro phenomena, and can be mainly applied to the interaction between group states in micro phenomena. Therefore, it can have the characteristics of statistics or average value. However, the group is composed of indivials, so energy or energy also abides by the basic law of force or power
force is a kind of simple indivial analysis, but energy is a kind of complex group analysis, and there must be a problem of order and disorder in group behavior. Generally speaking, if the indivial behavior in a group is orderly, then the performance of energy or energy is larger, and vice versa. This is the truth that unity is strength. In other words, there is a problem of "internal friction" in group behavior, "internal friction" can not be understood as the disappearance of energy, can only be understood as the conversion of energy, because in the micro phenomenon, different energies are very easy to convert
remember that energy is an inherent attribute, which depends on the quality and its internal order. Force is a manifestation of energy. When the earth realizes its power, energy increases or decreases. When doing positive work, energy decreases, and when doing negative work, energy increases!
what is force? What can it be? The common people believe that wind in motion will be represented by wind, wind, and water in motion will be represented by water. Water energy, heat or heat energy is represented by the irregular motion of atoms or molecules, and nuclear force or nuclear energy is also represented by protons and neutrons in motion. wait. There are different levels of material in the world, there are different kinds of material are moving, therefore, there will be different properties of force or energy. Therefore, the common people believe that force or energy is the nature of a function of matter in motion. Force or energy belongs to the existence category of nature
some people think that force is the interaction between objects. This view is wrong or one-sided. Because function can be understood as both a nature and a process. If understood as a process, then, before the interaction between objects, does the force or energy not exist? Is force or energy proced in the process of interaction between objects? Or is it shown? These are two different concepts. Performance refers to the original existence, only in a certain situation to show. Therefore, we must first understand the relationship between existence and performance
Newton defined force as that the acceleration of an object is proportional to the external force. Or force = mass times acceleration. Obviously, Newton expressed the force as a result of the interaction between objects. The result is only a phenomenon, and the definition of force must reflect the essence and the reasons behind the phenomenon. Therefore, I think Newton's definition of force is wrong or one-sided
matter exists objectively, so does the motion of matter, and the existence of force or energy as the nature of motion. Force or energy generally exists in the material world. As long as the material in the material world is moving, force or energy exists. Like the mass and momentum of material, it is an original, original and unexplained existence. Of course, like mass and momentum, they are also conserved in terms of the total amount of existence in the material world The quantity of force or energy is conserved
from the more precise or accurate point of view of scientists, there is still a difference between force and energy. Force is mainly applied to the interaction between single objects in macro phenomena, and can be mainly applied to the interaction between group states in micro phenomena. Therefore, it can have the characteristics of statistics or average value. However, the group is composed of indivials, so energy or energy also abides by the basic law of force or power
force is a kind of simple indivial analysis, but energy is a kind of complex group analysis, and there must be a problem of order and disorder in group behavior. Generally speaking, if the indivial behavior in a group is orderly, then the performance of energy or energy is larger, and vice versa. This is the truth that unity is strength. In other words, there is a problem of "internal friction" in group behavior, "internal friction" can not be understood as the disappearance of energy, can only be understood as the conversion of energy, because in the micro phenomenon, different energies are very easy to convert
remember that energy is an inherent attribute, which depends on the quality and its internal order. Force is a manifestation of energy. When the earth realizes its power, energy increases or decreases. When doing positive work, energy decreases, and when doing negative work, energy increases!
7. Force can sometimes change the energy of an object when acting on it
isn't it necessary for people to consume energy when exerting force
this should not be counted as
the conversion of energy into kinetic energy {the effect of force generation & gt
I don't know how much I should say to you
this is the level of senior one
isn't it necessary for people to consume energy when exerting force
this should not be counted as
the conversion of energy into kinetic energy {the effect of force generation & gt
I don't know how much I should say to you
this is the level of senior one
8. You are a student of grade two in junior high school. I don't know if you have learned the chapter "Gong". When you have. The following questions are easy to talk about
first of all, clarify a conceptual problem: 1. Energy transfer is the mutual transfer of the same form of energy without changing into another form of energy. 2. Energy conversion is the transfer of different forms of energy
I think you should know that there are three ways of energy transfer: work, heat transfer, and radiation
since it refers to the relationship between force and energy, it means doing work. That is to say, under the action of force, only when work is done on an object can there be a change in energy. In other words, if the force does not do work, there is no change in energy. There is change, but it does not mean there is energy conversion. Energy conversion refers to the change of energy transfer between different forms. So it's important to know what kinds of energy there are. Energy is divided into mechanical energy and internal energy. Mechanical energy includes kinetic energy and potential energy. The most obvious reaction of internal energy is that we can feel its temperature change. Then the problem becomes to analyze whether the force on the object does work on the object? So is the process of working a change between different forms of energy
let's talk about work. Work means that an object is under the action of a force and changes its position along the inner direction under the action of the force. Multiplying the force by the change of position is work. We use w for work, f for force, and s for position change. When the force and the object move in the same direction, that is, the object moves in the direction of the force under the action of the force, w = f * s. It is argued here that two conditions must be satisfied to do work on an object: 1. Powerful action and the resultant force is not zero; 2. The direction of motion is the same as the direction of the force or there is an included angle, which is not equal to 90 degrees. When the above two conditions are satisfied, the force will do work on the object. On the contrary, if the direction of the force is 90 degrees to the direction of the object's motion, then no work is done to the object
after knowing these, let's answer your second question, non-equilibrium force, because its resultant force is not zero, which satisfies the first condition, then if its direction of motion and the direction of resultant force are not 90 degrees, there will be energy changes, but whether there is energy conversion here is another matter, which depends on what the object applying the force is like. If you rub your hands there, that's kinetic energy converted into internal energy. If it's an internal combustion engine or an automobile engine, then the internal energy is converted into kinetic energy. If it's a moving object pushing another object forward, then kinetic energy is transferred from one object to another, and there is no energy conversion
for the balance force, the resultant force is zero, that is to say, no work is done, that is, the kinetic energy of the object can not be changed, but it does not mean that there will be no energy change and conversion. For example, a long wooden block is placed on the table, on which an object slides, but the long wooden block does not move. That is to say, the long wooden block is subject to the balance force, But because its upper surface is subject to sliding friction, then the upper force will do work, there will be energy changes, and there will also be energy conversion, that is, kinetic energy into internal energy
to sum up, for each component of the balance force, if there is generally energy conversion. Not the balance force
as for the problem of pushing the box, if you don't push it, it means that you have done work on the box, but the biological characteristics make you do work only on yourself, and the biological energy becomes heat energy and is lost
in addition, if you want to fully understand the relationship between force and energy, you have to finish high school to fully understand it. This is just a general introction, which should still give you a lot of conceptual questions. As an understanding. I think it's OK for you to have a look. There's no need to go into it. As you learn more, you will understand
I am a graate student of physics in University of science and technology of China.
first of all, clarify a conceptual problem: 1. Energy transfer is the mutual transfer of the same form of energy without changing into another form of energy. 2. Energy conversion is the transfer of different forms of energy
I think you should know that there are three ways of energy transfer: work, heat transfer, and radiation
since it refers to the relationship between force and energy, it means doing work. That is to say, under the action of force, only when work is done on an object can there be a change in energy. In other words, if the force does not do work, there is no change in energy. There is change, but it does not mean there is energy conversion. Energy conversion refers to the change of energy transfer between different forms. So it's important to know what kinds of energy there are. Energy is divided into mechanical energy and internal energy. Mechanical energy includes kinetic energy and potential energy. The most obvious reaction of internal energy is that we can feel its temperature change. Then the problem becomes to analyze whether the force on the object does work on the object? So is the process of working a change between different forms of energy
let's talk about work. Work means that an object is under the action of a force and changes its position along the inner direction under the action of the force. Multiplying the force by the change of position is work. We use w for work, f for force, and s for position change. When the force and the object move in the same direction, that is, the object moves in the direction of the force under the action of the force, w = f * s. It is argued here that two conditions must be satisfied to do work on an object: 1. Powerful action and the resultant force is not zero; 2. The direction of motion is the same as the direction of the force or there is an included angle, which is not equal to 90 degrees. When the above two conditions are satisfied, the force will do work on the object. On the contrary, if the direction of the force is 90 degrees to the direction of the object's motion, then no work is done to the object
after knowing these, let's answer your second question, non-equilibrium force, because its resultant force is not zero, which satisfies the first condition, then if its direction of motion and the direction of resultant force are not 90 degrees, there will be energy changes, but whether there is energy conversion here is another matter, which depends on what the object applying the force is like. If you rub your hands there, that's kinetic energy converted into internal energy. If it's an internal combustion engine or an automobile engine, then the internal energy is converted into kinetic energy. If it's a moving object pushing another object forward, then kinetic energy is transferred from one object to another, and there is no energy conversion
for the balance force, the resultant force is zero, that is to say, no work is done, that is, the kinetic energy of the object can not be changed, but it does not mean that there will be no energy change and conversion. For example, a long wooden block is placed on the table, on which an object slides, but the long wooden block does not move. That is to say, the long wooden block is subject to the balance force, But because its upper surface is subject to sliding friction, then the upper force will do work, there will be energy changes, and there will also be energy conversion, that is, kinetic energy into internal energy
to sum up, for each component of the balance force, if there is generally energy conversion. Not the balance force
as for the problem of pushing the box, if you don't push it, it means that you have done work on the box, but the biological characteristics make you do work only on yourself, and the biological energy becomes heat energy and is lost
in addition, if you want to fully understand the relationship between force and energy, you have to finish high school to fully understand it. This is just a general introction, which should still give you a lot of conceptual questions. As an understanding. I think it's OK for you to have a look. There's no need to go into it. As you learn more, you will understand
I am a graate student of physics in University of science and technology of China.
9. In classical mechanics, force and energy are both basic concepts - they are juxtaposed and non subordinate, and there is almost no question of who proces whom; However, from the relationship between energy and work as well as the relationship between work and force, force seems to be more original.
the theory of relativity in modern physics unifies energy and mass, while quantum mechanics, another cornerstone, integrates energy and the wave origin of particles; The combination of special relativity and quantum mechanics -- quantum field theory holds that the origin of force is the exchange of virtual mesons between particles, so as to exchange energy and momentum.
in general, classical mechanics has not made a clear explanation of the primary and secondary relationship between force and energy, while modern physics puts energy in an important position, and reces force to subordinate, derived, and independent Even the dispensable position (where everything should be powerful, it should be replaced by the corresponding potential energy) - energy proces force
the theory of relativity in modern physics unifies energy and mass, while quantum mechanics, another cornerstone, integrates energy and the wave origin of particles; The combination of special relativity and quantum mechanics -- quantum field theory holds that the origin of force is the exchange of virtual mesons between particles, so as to exchange energy and momentum.
in general, classical mechanics has not made a clear explanation of the primary and secondary relationship between force and energy, while modern physics puts energy in an important position, and reces force to subordinate, derived, and independent Even the dispensable position (where everything should be powerful, it should be replaced by the corresponding potential energy) - energy proces force
10. In classical mechanics, force and energy are both basic concepts - they are juxtaposed and non subordinate, and there is almost no question of who proces whom; However, from the relationship between energy and work and between work and force, force seems to be more original
relativity in modern physics unifies energy and mass, while quantum mechanics, another cornerstone, connects energy with the wave source of particles; Quantum field theory, a combination of special relativity and quantum mechanics, holds that the source of force is the exchange of virtual mesons between particles, so as to exchange energy and momentum
in general, classical mechanics has not clearly explained the primary and secondary relationship between force and energy, while modern physics has clearly placed energy in an important position, and reced force to a subordinate, derived, or even dispensable position (where everything is powerful, it is replaced by the corresponding potential energy) - energy proces force.
relativity in modern physics unifies energy and mass, while quantum mechanics, another cornerstone, connects energy with the wave source of particles; Quantum field theory, a combination of special relativity and quantum mechanics, holds that the source of force is the exchange of virtual mesons between particles, so as to exchange energy and momentum
in general, classical mechanics has not clearly explained the primary and secondary relationship between force and energy, while modern physics has clearly placed energy in an important position, and reced force to a subordinate, derived, or even dispensable position (where everything is powerful, it is replaced by the corresponding potential energy) - energy proces force.
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