**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= 1 2 (10)(8)

W = 40Nm

W = 40J