Finding Work Done from a Graph

Finding Work from Force-Displacement Graph
In a Force-Displacement graph, work done is equal to the area in between the graph and the horizontal axis.

Example:

The graph above shows the force acting on a trolley of 5 kg mass over a distance of 10 m. Find the work done by the force to move the trolley.

Answer:
In a Force-Displacement graph, work done is equal to the area below the graph. Therefore, work done
$$W=\frac{1}{2}(10)(8)=40Nm=40J$$