1- Write an Abstract, purpose, summary, results 
2- conclusion should state any conclusions which you may have regarding the results,as well as how well they match expected results.  The conclusions must be logically based upon observed phenomena. This section should also include the experimenter’s thoughts on future work.

these some extra info about conclusion

Conclusion:
– Experiment was conducted properly
– Material properties are very important in spring choice
Future Work:
– Research different spring materials and test behaviors for further knowledge
– Creating a more uniform apparatus to measure the spring while removing gravity from the equation