Measuring Change

Collect five identical washers and a spring that will stretch measurably when one washer is suspended from it.

1. Measure the length of the spring with zero, one, two, and three washers suspended from it.

2. Graph the length of the spring versus the mass.

3. Predict the length of the spring with four and five washers.

4. Test your prediction.

Analyze and Conclude

5. Describe the shape of the graph. How did you use it to predict the two new lengths?