| |
|
|
| |
 |
| Introduction |
|
| For a layman the term 'work' implies any activity resulting in muscular or mental exertion. In physics, however, the term has a different meaning. It represents a physical quantity. |
| |
| When a force acts on an object and the object moves in the direction of force, we say that the force has done work on the object. |
| |
| If you push a book lying on a table you exert force on the book and the book moves in the direction of the force. We say that the force has done work. |
| |
| If you push a wall, the act will definitely tire you, but the wall does not move. Scientifically, no work is done. |
| |
|
|
| |
|
|
| |
|
|
|
|
|
Get FREE Live Tutoring
(No credit card required)
|
|
|
