Draw and Evaluate Conclusions

Want to get good at experimenting? Inspecting values such as Hooke's law is a brilliant way of practising your experimental skills as you need to be accurate and precise. 

The diagram below shows a spring being stretched as a force is applied; it's the force of gravity showing the impact of different masses (with different weights) attached to the spring.

Hooke's Law suggests that the extension of an elastic object is directly proportional to the force applied to it. 

Springs are elastic objects because they stretch. The extension is the increased length of the spring after the force has been applied.

In the diagram above, when one mass is attached to the spring, the extension is x.

When a second equal mass is added, the extension is 2x.

Now it's over to you. Remember you can always turn back to the introduction if you need to re-read this information.