Search results
The principle of work and kinetic energy (also known as the work-energy theorem) states that the work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle.
- 7.2: Kinetic Energy and the Work-Energy Theorem - Physics LibreTexts
Explain work as a transfer of energy and net work as the...
- 7.2: Kinetic Energy and the Work-Energy Theorem - Physics LibreTexts
In science, work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, for a constant force aligned with the direction of motion, the work equals the product of the force strength and the distance traveled.
Review the units of work, energy, force, and distance. Use the equations for mechanical energy and work to show what is work and what is not. Make it clear why holding something off the ground or carrying something over a level surface is not work in the scientific sense.
Explain work as a transfer of energy and net work as the work done by the net force. Explain and apply the work-energy theorem.
In this section we begin the study of various types of work and forms of energy. We will find that some types of work leave the energy of a system constant, for example, whereas others change the system in some way, such as making it move. We will also develop definitions of important forms of energy, such as the energy of motion.
Concepts of work, kinetic energy and potential energy are discussed; these concepts are combined with the work-energy theorem to provide a convenient means of analyzing an object or system of objects moving between an initial and final state.
14 lis 2013 · David explains the link between work and kinetic energy. Created by David SantoPietro. Watch the next lesson: https://www.khanacademy.org/science/p....more.
