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Old 04-19-2019, 07:27 AM
Rakarskiy Rakarskiy is offline
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Join Date: Jun 2014
Location: Ukraine. Kiev
Posts: 146
The term Energy is essentially a force in motion.

Energy (ancient Greek -νέργεια - action, activity, strength, power) is a scalar physical quantity that is a single measure of various forms of movement and interaction of matter, a measure of the transition of movement of matter from one form to another. The introduction of the concept of energy is convenient in that if the physical system is closed, then its energy is conserved in this system for a period of time during which the system is closed. This statement is called the law of conservation of energy.
From a fundamental point of view, energy is one of the three (energy, momentum, moment of momentum) of additive integrals of motion (that is, quantities that remain in motion), which, according to Noether’s theorem, is related to time homogeneity.
In physics, mechanical energy describes the sum of the potential and kinetic energies present in the components of a mechanical system. Mechanical energy is the energy associated with the movement of an object or its position, the ability to perform mechanical work; it is the energy of motion and its accompanying interaction.
For example, the formula for kinetic energy.
T = mV^2 / 2 = Iw^2 / 2
Here (m) is the mass of the body, (V) is the velocity of the center of mass, (w) is the angular velocity of the body and (I) is its moment of inertia about the instantaneous axis passing through the center of mass.
Possible designations of kinetic energy: T, Ekin, K and others. In the SI system, it is measured in joules (J).

When the rotational motion requires torque to create the angular acceleration of the object. The amount of torque needed to create angular acceleration depends on the mass distribution of the object. The moment of inertia is the value that describes the distribution. It can be found by integrating over the mass of all parts of the object and their distance to the center of rotation, but you can also search for the moments of inertia for common shapes. Torque on the axis is the product of the moment of inertia and angular acceleration. The unit of torque is Newton - meters (Nm).
[Torque] = [Moment of inertia] x [Angular acceleration]
T = Iw, where T is the torque around a specific axis (N ∙ m); I is the moment of inertia (kg ∙ m 2); w - angular acceleration (radian / s ^2)
Another formula
Torque [T] is the product of force [F] (in Newtons) on the shoulder of force [R] (in meters). In the SI system, it is measured in Newtons per meter (Nm).
T = Fl, where (T) = torque around a certain axis (Nm); (F) = Pressure Force (N); (l) = Arm Length (Meters)

From these components you can find the force that causes the rotation of the object.
Termin energy is nothing more than a commercial concept for describing the action of a Force in motion on a path cut for a certain period of time.

Let's apply this to the concept of the amount of DC electrical energy.
Electrical energy (W) is the product of voltage (Volt) and electric current in the circuit (Apery) over a period of time (hours). If we apply the same formula without a time derivative, we obtain the power parameter (P), where one of the derivatives is the POWER OF CURRENT.
Energy is a derivative with an element of force, you can measure even the designation of lame parrots, but the essence of the concept of energy will not change.

Last edited by Rakarskiy; 04-19-2019 at 07:47 AM.
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