Work Done by a Constant Force
When a force acts on an item over a long distance, the thing undergoes work. Physically, the work done on an item is the change in energy that the object possesses.
Thus, we can define the work done as the change in the energy of the object(either kinetic or potential). The total energy of the system is always constant and it can be converted to other forms using the work done.
Work Done by the System
When we talk about work, we focus on the impact that the system has on its surroundings. As a result, we consider work to be positive when the system makes an attempt to improve the environment (i.e., energy leaves the system). If work is done on the system, the work is negative (i.e., energy added to the system).
Examples of the work done by the system are,
- The output from the turbine.
- A rocket is being launched.
- A pump used to draw water.
- A vehicle running with an Internal Combustion Engine.
Work Done
Work is said to be done when a force (push or pull) applied to an object causes a displacement of the object. In our daily life, we do work and get tired. Even if we are doing our work while sitting on a chair, we say we have done a lot of work and got tired. But this is not the work done as per the definitions of physics.
In this article, we will learn the definition of work in terms of physics and the factors on which work depends.
Table of Content
- Work Done in Physics
- Work Done by a Constant Force
- Formula for Work Done
- Unit of Work
- Factors Affecting Work
- Types of Work Done
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