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Work Transfer and Types of Work Transfer

 Work is one of the basic modes of the energy transfer. 

 The Work is done by a force as it acts upon a body moving in the direction of  the force. 

 The Work is said to be done by the system if  the sole effect on things external to the system can be reduced to the raising of a weight. 

 The unit of work is N.m or Joule ( 1 Nm = 1 Joule ). The rate at which work is done by, or upon, the   system is known as power. The unit of power is J/s or watt. 

 Work is one of  the forms in which a system and its surroundings can interact with each other. There are various types of  Work transfers  which can get involved between them. 





Types of Work Transfer :

1. Electrical Work. 

2. Shaft Work.

3. Paddle-wheel work or stirring work 

4. Flow work  

5. Work done in stretching a wire. 

6. Work done in changing the area of  the surface film.

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