Work

Energy

Power Work

done Cases where

work is

not done Positive

and

Negative Work Examples

on

Work Done Work with

Variable

Force Work by

Variable

Force Q&A

Energy

Power Work

done Cases where

work is

not done Positive

and

Negative Work Examples

on

Work Done Work with

Variable

Force Work by

Variable

Force Q&A

Force in everyday life is usually not a constant force. So far, when we have discussed work done, we have assumed that the force is constant. What happens if the force is variable? The figure below is a graph of varying force in one dimension.

Let us first understand how do we find work done from a graph. If we are talking about a constant force, the area under the graph (which will be a rectangle) gives us the work done.