Work Energy and Power
1.0 Introduction
1.0 Introduction
Work is done when a force moves its point of application along the direction of its line of action.
Consider a case (a) in which a man is pushing a block along the surface to move the block by distance $s$, whereas in another case (b) the person pushing the same block along the surface but against the wall and there is no displacement of the block.
In which case the work done is more?
In case (a) the work done is more because in physics a moving body is said to have more energy than an identical body at rest.
Work done can be calculated by following three ways.
- Work done by area under force displacement curve
- Work done by a constant force
- Work done by a variable force
