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An Investigation To See If Hookes Law Is Or Is Not reliable.

Extracts from this document...

Introduction

Kerensa Bushell 10Jo

An Investigation To See If Hookes Law Is Or Is Not reliable

Aim:

I am going to explore Hookes Law and produce a conclusion of my own whether or not Hookes Law is accurate

Hookes Law states that the extension of a spring is proportional to the force applied to it.

Prediction:

I predict that Hookes Law is true because we use springs to measure things such as we use the Newton metre to measure newtons this uses a spring and if spring weren’t accurate to the force applied to it we wouldn’t use a Newton metre.

I believe each 100g weight will move the spring in equal or round about additions each time i.e.

Middle

A springBoss and Clamp30cm ruler100g weights

Diagram:

Method:

• For safety measures I will stand up during the whole experiment
• For fairness I will keep all the above factors a constant and use the same spring throughout.
• I will go up in 100g intervals every time until I reach a certain point making sure I do not exceed the springs yield point (where the spring is stretched so far it cannot return to its original position it may be slightly over its yield point but this can still affect measurements and can ruin the whole experiment.)
• I will repeat this experiment 3 times using the same spring as before and going up in the same weight

Conclusion

My graph points I think are quite accurate, steadily rising in a diagonal direction, I have drawn a line of best fit by using that it showed me where some odd results were and also gave a guideline of where I should be and my results were very close to it. I could of gotten better results if I had used 50 g weights instead to give me a wider view of results and even more accurate than what I have now. I think my conclusion is reliable because everything ties together with the initial prediction and even if Hookes Law is not true my results give some good evidence that it possibly exists my conclusion is: true.

This student written piece of work is one of many that can be found in our AS and A Level Waves & Cosmology section.

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