Can kinetic energy be said to be mechanical energy, and what is the relationship between kinetic ene

Kinetic energy is a part of mechanical energy, and mechanical energy, in addition to including kinetic energy, also includes a part of potential energy such as gravitational potential energy and elastic potential energy.

You can say that the human body has kinetic energy when it moves, but you can say that mechanical energy is more comprehensive, let's say a person is walking uphill, he has kinetic energy, and his gravitational potential energy is also changing.

Generally speaking, mechanical energy is used, but kinetic energy is used when you study the mutual conversion of kinetic energy and potential energy.

Kinetic energy is a part of mechanical energy, so it cannot be directly said as mechanical energy.

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Mechanical energy is relatively wide, it includes kinetic energy and potential energy, in addition to kinetic energy, there is gravitational potential energy when people are moving, and gravitational potential energy is related to the reference point, we generally think that the ground is 0 potential energy point, and our center of gravity is above the ground, so there is potential energy, so it cannot be directly said to be kinetic energy, if you want to say kinetic energy, the reference point is in the same plane as the object, and there is a separate kinetic energy (not mechanical energy).

Mechanical energy is divided into kinetic energy and potential energy, and the energy that is possessed by motion is called kinetic energy (or mechanical energy), and potential energy is divided into gravitational potential energy and elastic potential energy, and when you can't tell which kind of energy it is, it can be said to be mechanical energy. Human movement can be said to have kinetic energy.

Mechanical energy includes kinetic energy, potential energy, and kinetic energy is a manifestation of mechanical energy.

Human motion (any moving object) can be said to have kinetic energy, and when there is both kinetic energy and potential energy, it can only be said to have mechanical energy.

Mechanical energy includes kinetic energy and potential energy, and when a person moves upward, there is kinetic energy and potential energy.

It's like saying that there are humans on the planet and there are men on the planet are two different things.

Kinetic energy and mechanical energy are subordinate. Mechanical energy includes kinetic energy and potential energy, and potential energy is divided into gravitational potential energy and elastic potential energy. Let's take a closer look at their respective definitions and calculation formulas.

Definitions

The energy that an object has due to its motion is known as the kinetic energy of the object. Its size is defined as one-half of the product of the mass of the object and the square of the velocity.

Formula

ek=1/2mv2

From the formula, it can be seen that the greater the velocity of an object with the same mass, the greater its kinetic energy; The greater the mass of an object moving at the same velocity, the greater the kinetic energy it has.

Definitions

Mechanical energy is the sum of kinetic energy and potential energy, and here potential energy is divided into gravitational potential energy and elastic potential energy. We refer to kinetic energy, gravitational grinding potential energy, and elastic potential energy collectively as mechanical energy.

FormulaE-machine. ep

ek or e = ekepe shells.

ep=mgh

E-bomb. 1 2kx (x is a spring-shaped variable).

From the formula, it can be seen that the kinetic energy is determined by mass and velocity; It is the mass and height that determine the gravitational potential energy; The elastic potential energy is determined by the stiffness coefficient and the deformation. Mechanical energy is simply the sum of kinetic energy and potential energy. Mechanical energy is a physical quantity that represents the state and height of an object.

There is a conversion between the kinetic energy and the potential energy of an object. In the process of conversion of only kinetic energy and potential energy, the total amount of mechanical energy remains constant, and the mode ballast is the law of conservation of mechanical energy.

What is the main difference between mechanical energy and kinetic energy, and how can candidates distinguish between them? If you want to take a look at the little friends who want to know about it, the following is carefully prepared by me for you "What is the difference between mechanical energy and kinetic energy" for reference only, continue to pay attention to this site will continue to get more information!

What is the difference between mechanical energy and kinetic energy

The difference between kinetic energy and mechanical energy is that mechanical energy is a general term for kinetic energy and potential energy, potential energy has gravitational potential energy and elastic potential energy, etc., kinetic energy is included in mechanical energy. Kinetic energy is the energy possessed by motion, and its magnitude is defined as one-half of the product of the square of the mass of the object and its velocity.

Definition of kinetic energy

1. Definition: The energy that an object has due to motion is called kinetic energy.

2. Influencing factors: the velocity of the object and the mass of the object.

When the velocity of an object is the same, the greater the mass of the object, the greater the kinetic energy.

When the mass of an object is the same, the greater the velocity of the object, the greater the kinetic energy.

3. Kinetic energy formula: ek=mv2 2 (m is the mass of the object, v is the velocity).

Further reading: Definition of potential energy

1. Definition: Potential energy is the energy stored in a system, which can also be released or converted into other forms of energy. Potential energy is a state quantity, also known as potential energy. Potential energy is not possessed by individual objects but is shared by interacting objects.

2. Potential energy is divided into: gravitational potential energy, magnetic field potential energy, elastic potential energy, molecular potential energy, electric potential energy, gravitational potential energy, etc.

Note: There is a certain relationship between the magnitude of the potential energy EP and the force f, the distance h (the elastic potential energy is x, the gravitational potential energy is r, etc.), which is d(ep) dh=f. It can also be written as ep= fdh, which is the magnitude of the work done by the conservative force.

Conversion of kinetic and potential energy

1. A moving object can do work, and the energy it has due to motion is called kinetic energy; The greater the velocity of the object, the greater the mass of the object, and the greater the kinetic energy of the object.

2. Transformation of kinetic energy and potential energy.

1) Kinetic energy and gravitational potential energy can be converted into each other.

2) Kinetic energy and elastic potential energy can be converted into each other.

3) Gravitational potential energy and elastic potential energy can be converted into each other.

Note: To judge the change of kinetic energy and gravitational potential energy, the main thing is to look at the change of the motion speed of the object and the relative height of the hole, because the mass of the object does not change.

What is the difference between kinetic energy and mechanical energy? If you want to know, let's take a look! The following is carefully prepared by me for you "What is the difference between kinetic energy and mechanical energy", this article is for reference only, continue to pay attention to this site will continue to get more information!

What is the difference between kinetic energy and mechanical energy

The difference between kinetic energy and mechanical energy is that mechanical energy is a general term for kinetic energy and potential energy, potential energy has gravitational potential energy and elastic potential energy, etc., and kinetic energy is included in mechanical energy. Kinetic energy is the energy possessed by motion, and its magnitude is defined as one-half of the product of the square of the mass of the object and its velocity.

Further reading: Definition of kinetic energy

The energy possessed by the vertical shed body due to its motion is called the kinetic energy of the object. Its expression is ek=mv2 2, and the unit is joules (j), which is referred to as joules.

Definition of mechanical energy

Mechanical energy is the sum of kinetic energy and partial potential energy. Mechanical energy refers to: without considering friction and medium resistance, only the mutual conversion of kinetic energy and potential energy occurs in the object and the total amount of mechanical energy remains unchanged, that is, the increase or decrease of kinetic energy is equal to the decrease or increase of potential energy, that is, the law of conservation of mechanical energy.

Mechanical energy is related to the mechanical motion of the whole object. When there is friction, part of the mechanical energy is converted into internal energy, which is lost in the air, and the other part is converted into kinetic energy or potential energy.

Conditions for the conservation of mechanical energy

The condition for conservation of mechanical energy is that only gravity or elastic force does the work. Only when gravity (or the elastic force of a spring) does work, the gravitational potential energy (or elastic potential energy) and kinetic energy of an object are converted into each other, but the total mechanical energy remains the same.

When the conversion of kinetic energy and gravitational potential energy occurs, only gravity does work, and when the conversion of kinetic energy and elastic potential energy occurs, only elastic force does work, and other forces do not do work, then the mechanical energy of the system is conserved.

If there is only the conversion of kinetic energy, gravitational potential energy and elastic potential energy between objects in the system, and there is no transfer of mechanical energy between the system and the outside world, and the mechanical energy is not converted into other forms of energy (such as no increase in internal energy, such as the increase of temperature residual Zen degree), then the mechanical energy of the system is conserved.