Work Energy Definition

Introduction to work and energy.

Work energy definition.

The expression for kinetic energy can be derived from the definition for work and from kinematic relationships. We can calculate work by multiplying the force by the movement of the object. The si unit of work is the joule j energy. The resulting velocity and or height of the object can then be predicted from energy information.

The work energy principles discussed here are identical to electric work energy principles. Learn more about energy in this article. The effect that work has upon the energy of an object or system of objects will be investigated. In physics work is defined as a force causing the movement or displacement of an object.

Constraint forces edit constraint forces limit the movement of components in a system such as constraining an object to a surface in the case of a slope plus gravity the object is stuck to the slope when attached to a taut string it cannot move. Google classroom facebook twitter. Consider a force applied parallel to the surface that moves an object with constant acceleration. It may exist in potential kinetic thermal electrical chemical nuclear or various other forms.

In order to understand this work energy approach to the analysis of motion it is important to first have a solid understanding of a few basic terms. There are moreover heat and work i e energy in the process of transfer from one body to another. How to use energy in a sentence. What is work energy and power.

In physics we can define energy as the capacity to do. What are energy and work. Opens a modal springs and hooke s law. This is the currently selected item.

Intro to springs and hooke s law opens a modal what is hooke s law. Energy definition is dynamic quality. In the case of a constant force work is the scalar product of the force acting on an object and the displacement caused by that force. Synonym discussion of energy.

Work energy problem with friction opens a modal conservative forces opens a modal power opens a modal what is power. Here we learn what work and energy mean in physics and how they are related. Energy is defined as the capacity of a physical system to perform work however it s important to keep in mind that just because energy exists that doesn t mean it s necessarily available to do work. Energy in physics the capacity for doing work.

Work is said to be done when a force applied to an object moves that object. Work and energy part 2 conservation of energy. Opens a modal potential energy stored in a spring.