• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigation in the extension of an elastic band

Extracts from this document...

Introduction

Investigation in the extension of an elastic band Aim & Hypothesis I anticipate that an increase in the load on the elastic band will result in an increase in the extension of it. I think that the extension will be proportional to the load on the elastic band. I think that there will be a certain amount or energy lost and that this will increase proportionally as the load increase. This will be lost due to heat energy. Safety RISK ASSESSMENT - LEVEL ONE This experiment does not carry many hazards. Bags and coats will be moved out of the way to ensure that no one will trip over them. ...read more.

Middle

Then I loaded the elastic band with the masses, increasing in 100g intervals each time. I allowed the elastic band to stretch and stay in position for 60 seconds before taking a reading. To ensure that my measurements were as accurate as possible I used a meter ruler which was clamped onto the retort stand so that the elastic band hung next to it. I could then measure the extension using a set square flat against the end of the ruler to read of the measurements. After I had put on all 12 masses I took them all off one by one measuring the elastic band as I unloaded it. ...read more.

Conclusion

If I had more time then I would have repeated the experiment, as this would have meant that I would be able to take averages and therefore reduce any anomalies. Evaluation My uncertainty is + 0.01m because I was using a meter ruler and therefore this was the smallest measurement on it. I could probably improve this uncertainty by using a more precise instrument for measuring it, (probably a vernier scale.) Finding the averages of my results if I had sone the experimant more than once would have helped to 'improve' any anomalous results. Conclusion My results have shown that my hypothesis was right. I have been able to work out the amount of energy lost in heat by using the area under the two lines of the graph. Catherine Needham 12SL Physics Practical - 07/11/02 Catherine Needham 12SL Physics Practical - 07/11/02 ...read more.

The above preview is unformatted text

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

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Waves & Cosmology essays

  1. I am doing an investigation in to how much a metre rule bends when ...

    We can immediately see that this relates closely to my hypothesis. The simple trend and pattern in my graph is that I have got an exceptionally good correlation between the load and the extension. My R2 value is 0.9991 and the best possible correlation is 1.

  2. Find out about the energy changes in a tethered cart.

    distance that the cart would be pulled back three times and I will take a mean average of the results to plot a graph with them. In this experiment there is an independent variable, which is referred to as e, this is the extension of the spring and the dependent

  1. Investigation to show how Elastic Bands Behave Under Load.

    Variables: Key factors to vary are: * Change the length of the elastic bands. * Change the width of the elastic bands. * Change the thickness of the band. * Extend the load. Fair Test I will change the length of the elastic band and I will keep the width the same.

  2. Elastic Band Investigation.

    It is measured in units of N/m. Hooke's law applies to both stretchable and compressible springs (and of course elastic bands!). There is only one limitation to Hooke's law, and that's if you stretch the spring beyond it elastic limit.

  1. To investigate the stretching of an elastic band when it has some load on ...

    The elastic limit nearly coincides with the proportional limit for some elastic materials. Prediction: I predict that the results graph for extension versus load is a straight line with a curve to it at the top when it has reached the elastic limit.

  2. How does the weight hung on the end of a piece of rubber cord ...

    If the material of the cord was changed half way through the experiment, this would not produce an accurate set of results as the material of the cord could be stronger or weaker than before and this would affect how it would react to weight on the end.

  1. Elastic Assessment

    A polymer is a long chained molecule. The arrangements of this molecule are not ordered and infact they double up back on themselves and become tangled. Therefore, when rubber is stretched, the tangles are straightened out, a small force is needed to do this, as the tangles are cross-linked.

  2. Waves and Cosmology - AQA GCE Physics Revision Notes

    when strange quark turns into an up quark). But strangeness is conserved when there is a strong interaction ? involving strong force. Hence, strange particles always occur in pairs, if 2 particles interact to produce a strange particle, than a strange antiparticle must also appear.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work