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Mechanical principles of dynamic engineering systems
Published in Alan Darbyshire, Charles Gibson, Mechanical Engineering, 2023
Alan Darbyshire, Charles Gibson
Kinetic energy is the energy that an object has due to its motion. There are two types of kinetic energy, linear kinetic energy and rotational kinetic energy. In this section we will only consider linear kinetic energy. Rotational kinetic energy is considered later in this chapter.
Energy Efficiency and Conservation Technologies
Published in Swapan Kumar Dutta, Jitendra Saxena, Binoy Krishna Choudhury, Energy Efficiency and Conservation in Metal Industries, 2023
Jitendra Saxena, Binoy Krishna Choudhury
First Law of Thermodynamics: “Energy and materials are always conserved.” Outcome includes equations of energy and mass balance, which are said to be the law of conservation of mass and the law of conservation of energy. The sum total of mass (and energy) remain constant in an isolated system and in the universe, as long as the nuclear reaction, represented by E = mC2, is not taking place. In a nuclear reaction, loss of mass (rest mass) times (velocity of light in free space squared) equals the amount of (thermal) energy released. Therefore, in the absence of a nuclear reaction, energy can be neither created nor destroyed, and only can change its form—say from potential energy to kinetic energy, or vice versa. Other forms of energy can be shown to be either one of these two. For example, current electricity, rotating shaft, moving particles, light, heat, etc., are examples of kinetic energy. On the other hand, static electricity, chemical energy, magnetic energy, energy due to position of a mass in a gravitation field, magnetism, etc., are examples of potential energy.
Current, voltage and resistance
Published in Mike Tooley, Lloyd Dingle, Engineering Science, 2020
From your study of dynamic engineering systems you will recall that energy can exist in many forms including kinetic energy, potential energy, heat energy, light energy etc. Kinetic energy is concerned with the movement of a body whilst potential energy is the energy that a body possesses due to its position. Energy can be defined as ‘the ability to do work’ whilst power can be defined as ‘the rate at which work is done’.
Methods of energy generation from the human body: a literature review
Published in Journal of Medical Engineering & Technology, 2019
Jamal Al-Nabulsi, Sameh El-Sharo, Nicole Salawy, Halah Al-Doori
Kinetic energy is the energy possessed by a body during motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained energy during its acceleration, the body maintains this kinetic energy unless its speed changes. Kinetic energy is thus related to motion.