To compute work done by the spring force, calculate the area of a:

a)rectangle
b)circle
c)triangle

The spring force changes as a function distance, so triangle if on a F vs x plot

To compute the work done by the spring force, we need to calculate the area under the force-distance graph. In this case, since the spring force changes as a function of distance, we can consider a triangle on the graph.

Let's break down the process step-by-step for each shape:

a) Rectangle:
To calculate the work done by the spring force in the case of a rectangle, we need to determine the force and distance involved. If the force remains constant over the given distance, we can simply multiply the force by the distance to find the work done. The formula for calculating the work done (W) is:

W = Force * Distance

b) Circle:
When dealing with a circle, the spring force is not constant as it changes throughout the distance. In this case, we cannot directly calculate the work done by finding the area of a shape. Instead, we need to integrate the force-displacement function with respect to the distance to find the total work done. The equation for calculating work in this case is:

W = ∫ F(x) dx

c) Triangle:
Since the spring force changes with distance, a triangle can represent the force-distance relation on a graph. To find the work done by the spring force in this case, we can calculate the area of the triangle. The formula to determine the area of a triangle is:

Area = 0.5 * base * height

In this case, the base of the triangle corresponds to the distance (x), and the height represents the force (F) at that distance. By calculating the area of the triangle, we obtain the work done by the spring force.

Please note that the above explanations assume a simplified scenario and may not necessarily account for all potential variables or real-world complexities.